What Is a Pre Shipment Inspection (PSI) in China?
Key Benefits of Pre Shipment Inspection (PSI)
What Are the Key Stages of the Pre-Shipment Inspection Process?
What Specific Aspects Are Inspected During a Pre-Shipment Inspection?
When Should You Schedule a Pre-Shipment Inspection?
How Are Items Selected for Pre-Shipment Inspection?
How to Prepare for a Successful Pre-Shipment Inspection
Who Conducts Pre-Shipment Inspections?
Can the Criteria for Pre-Shipment Inspection Be Customized?
What Are the Different Types of Pre-Shipment Inspections?
What Do Inspectors Examine During a Pre-Shipment Inspection?
What Industries Use Pre-Shipment Inspection?
Common Mistakes in Pre-Shipment Inspection and How to Avoid Them
How Do Pre-Shipment Inspections Mitigate Risks in International Trade?
How Are Sampling Procedures and Acceptable Quality Limits Determined?
What Happens If Products Fail a Pre-Shipment Inspection?
A Pre-Shipment Inspection (PSI) is a crucial quality control checkpoint in the supply chain, ensuring that products meet agreed specifications, safety requirements, and international regulatory standards before leaving the factory. By identifying defects early, PSI helps buyers avoid costly returns, non-compliance issues, and shipment delays.
For manufacturers, PSI provides valuable validation of production quality, adherence to design specifications, and reduces the risk of disputes. In today’s global trade environment, a well-executed PSI not only protects financial investments but also fosters trust and long-term collaboration between buyers and suppliers.
This guide explores the importance of PSI, highlights its role in enhancing product reliability and compliance, and offers a step-by-step overview of processes, sampling methods, and best practices to ensure inspections are effective and actionable.
What Is a Pre Shipment Inspection (PSI) in China?
A Pre-Shipment Inspection (PSI inspection) is a third-party inspection service conducted before shipment. Many buyers ask what does pre shipment mean, what does pre-shipment mean, or what does preshipment mean. The meaning of pre shipment (sometimes misspelled as preshiping) simply refers to any inspection or quality verification carried out before goods are shipped or delivered.
In practice, pre-shipment inspection is also called pre inspection, preliminary inspection, or pre delivery inspection. It is performed when production is complete and 80–100% of goods are packed, ensuring products meet specifications before export.
Key Benefits of Pre Shipment Inspection (PSI)
A pre-shipment inspection (PSI) ensures your products meet quality, compliance, and packaging standards before leaving the factory. At Welle Inspection, our China pre-shipment inspection services help businesses protect their supply chain and brand.
Key Benefits:
Avoid losses from defective or noncompliant goods.
Save time and money by reducing rejections and returns.
Improve quality with immediate corrective actions.
Ensure efficient warehouse management with correct packing and labeling.
Guarantee customer satisfaction by shipping the right products.
Protect your brand reputation and reliability.
Monitor supplier performance for consistent quality.
Why PSI Matters:
Pre-shipment inspections verify that products match your specifications and quality standards. Detecting defects before shipment allows you to hold suppliers accountable and prevent costly issues that are difficult to fix once goods are shipped.
What Are the Key Stages of the Pre-Shipment Inspection Process?
A Pre-Shipment Inspection (PSI) consists of ten structured stages, each designed to evaluate a specific aspect of product quality, quantity, and compliance before shipment. Together, these stages ensure that goods meet contractual requirements and are ready for export.
1. Inspection Visit and Production Status Confirmation
The inspection begins with the inspector arriving at the manufacturer’s premises. At this stage, the inspector confirms that production has reached the required completion level—typically 80–100% finished—and that goods are ready for inspection. This ensures the inspection accurately reflects the final shipment condition.
2. Quantity Verification
Quantity verification is a critical component of PSI. The inspector cross-checks the purchase order, packing list, and on-site inventory to confirm that the correct number of units is available for shipment. This step helps prevent shortages, over-shipments, and supply chain disruptions.
3. Random Sample Selection (AQL Sampling)
To ensure an objective and statistically valid assessment, the inspector selects samples randomly using internationally recognized sampling standards such as ANSI/ASQ Z1.4 or ISO 2859-1 (AQL). Random selection allows potential defects to be identified across a production batch without inspecting every item.
4. Visual Inspection
During the visual inspection, the inspector examines sampled products for visible defects, damage, or cosmetic issues that may affect appearance or usability. Common issues such as scratches, sharp edges, dents, or color inconsistencies are identified and recorded.
5. Verification of Product Specifications
At this stage, the inspector verifies that product dimensions, materials, and physical attributes conform to approved samples, drawings, and order specifications. Actual measurements are compared against agreed requirements to confirm manufacturing accuracy and consistency.
6. Cosmetic and Workmanship Assessment
Workmanship quality is evaluated in detail, focusing on assembly quality, finishing, and material handling. The inspector checks for imperfections such as poor assembly, uneven finishes, or improper joining, ensuring the overall product quality meets acceptable standards.
7. Functional and Safety Testing
Functional performance and safety are essential elements of PSI, particularly for mechanical or electrical products. Inspectors conduct operational and safety tests in accordance with relevant standards such as ISO, ASTM, or EN, confirming that products function correctly and comply with safety requirements.
8. Packaging and Labeling Inspection
The inspector verifies that products are properly packaged and accurately labeled. This includes checking carton strength, internal protection, shipping marks, and regulatory labels to ensure products are protected during transit and compliant with shipping and legal requirements.
9. Documentation Review
A complete PSI includes a review of all relevant documents, such as invoices, packing lists, certificates, and compliance documentation. This step ensures that shipment information aligns with contractual terms and helps prevent customs clearance delays or administrative issues.
10. Final Inspection Report and Decision Support
After completing all inspection activities, the inspector prepares a detailed final report. The report summarizes inspection findings, documents any defects, and recommends corrective actions where necessary. This report enables the buyer to make an informed decision to approve the shipment, request rework, or reject the goods before shipment.
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What Specific Aspects Are Inspected During a Pre-Shipment Inspection?
During a Pre-Shipment Inspection (PSI inspection), trained inspectors test the quality of parts before shipment and verify whether finished products meet agreed specifications, safety requirements, and regulatory standards. The objective is to identify defects early and ensure that only compliant products are approved for shipment.
The key aspects typically inspected during PSI include:
Product Appearance and Workmanship
Inspectors evaluate overall product quality, focusing on appearance, materials, and craftsmanship. This includes checking for visible defects, surface imperfections, poor finishing, or assembly inconsistencies that could affect product usability or customer satisfaction.
Functional Performance and Safety
Products are tested to confirm they function as intended and meet applicable safety requirements. Depending on the product type, inspectors conduct operational, performance, and basic safety tests to reduce the risk of functional failures or safety issues after delivery.
Dimensions, Tolerances, and Specifications
Inspectors verify that product dimensions, tolerances, materials, and construction conform to approved samples, technical drawings, and order specifications. Accurate specification checks help ensure consistency and prevent non-conforming products from entering the supply chain.
Quantity Verification and Assortment Accuracy
The inspection confirms that the correct quantity and product assortment match the purchase order and packing list. This step helps avoid shortages, over-shipments, or incorrect product combinations.
Packaging Integrity and Labeling Accuracy
Inspectors examine packaging quality to ensure products are adequately protected during transportation. Labeling is checked for accuracy, clarity, and compliance with shipping, regulatory, and customer requirements.
Compliance with Standards and Regulations
Where applicable, products are assessed for compliance with relevant international and industry standards, such as CE marking, RoHS, or other specified regulatory requirements. This helps prevent compliance risks and potential customs or market-entry issues.
Defect Identification and Rejection Criteria
All detected defects are classified, allowing inspectors to determine which items must be rejected when inspecting a delivery based on agreed acceptance criteria and AQL standards.
When Should You Schedule a Pre-Shipment Inspection?
Timing is critical for an effective China pre-shipment inspection. Scheduling a pre-shipment inspection (PSI) at the right stage of production ensures that your products meet quality standards, comply with regulations, and are ready for timely delivery.
Optimal Timing for Welle Inspection PSI
For the most accurate and thorough assessment, a pre-shipment inspection should ideally be scheduled when:
Production is at least 80% complete: This allows inspectors to evaluate a representative sample of the goods, including any variations that may arise during production.
Goods are fully manufactured and packed: Inspectors can check the final products for workmanship, functionality, packaging, labeling, and compliance before shipment.
Scheduling too early may leave some quality issues undetected, while waiting until the last minute could delay shipment if corrective actions are required.
Factors to Consider When Scheduling a PSI
Production Timeline
Plan your PSI to allow enough time for inspection and potential corrective actions. Ideally, schedule the inspection 1–2 weeks before the shipping deadline.Seasonal and Peak Manufacturing Periods
Holidays or busy production seasons may affect both inspection and shipping timelines. Account for these periods when arranging your PSI.Customs and Regulatory Requirements
Some products must meet strict compliance deadlines (e.g., RoHS for electronics, CE marking for EU shipments). A Welle Inspection pre-shipment inspection in China ensures all regulatory requirements are verified before shipment.Risk Mitigation
Conducting PSI at the right time helps prevent business losses due to defective or noncompliant goods and avoids costly rejections or returns.
By scheduling your China pre-shipment inspection at the right stage, Welle Inspection helps you secure product quality, ensure compliance, and maintain smooth operations across the supply chain.
How Are Items Selected for Pre-Shipment Inspection?
During a Pre-Shipment Inspection (PSI), inspectors select items using internationally recognized AQL (Acceptable Quality Limit) sampling standards, such as ANSI/ASQ Z1.4 or ISO 2859-1, to ensure an objective and statistically reliable assessment of product quality.
Samples are chosen through random selection, based on the total lot size and the defined inspection level. This statistically valid approach allows inspectors to evaluate overall product quality without inspecting every item, while still identifying potential defects across the entire production batch.
By following standardized AQL sampling procedures, pre-shipment inspections deliver fair, unbiased, and consistent results, enabling buyers to make informed shipment approval or rejection decisions with confidence.
How to Prepare for a Successful Pre-Shipment Inspection
Proper preparation is essential to ensure a smooth and effective Pre-Shipment Inspection (PSI). Factories and suppliers can take the following steps to maximize pass rates and reduce delays:
1. Complete Internal Quality Checks
Before the PSI, conduct thorough internal inspections to identify and correct any defects. Ensure products meet the agreed-upon specifications, approved samples, and quality standards.
2. Communicate Clear Specifications
Provide inspectors and suppliers with detailed product specifications, including materials, dimensions, functionality, and workmanship requirements. Clear documentation helps prevent misunderstandings and ensures inspectors know exactly what to evaluate.
3. Prepare Documentation and Test Reports
Gather all relevant documents such as purchase orders, packing lists, certificates, drawings, and test reports. Proper documentation supports a smooth inspection process and allows inspectors to verify compliance with order and regulatory requirements.
4. Ensure Correct Packing
Pack goods according to standard procedures before inspection. Proper packaging helps inspectors evaluate transit readiness and prevents delays or disputes over shipping integrity.
5. Assign a Responsible Factory Contact
Designate a knowledgeable contact at the factory to coordinate with the inspection team. This person should facilitate access, provide documentation, and answer questions promptly during the inspection.
Who Conducts Pre-Shipment Inspections?
Pre-Shipment Inspections (PSI) are typically carried out by experienced quality professionals to ensure products meet specifications, regulatory requirements, and buyer expectations before shipment. For international buyers, working with a reliable pre-shipment inspection company in China is essential to secure unbiased and accurate inspection results.
1. Independent Third-Party Inspection Companies
Most businesses rely on independent third-party inspection service providers to conduct PSIs. These companies offer:
Impartial assessments: Independent inspectors ensure unbiased evaluation of product quality and compliance.
Industry expertise: Professional inspectors have specialized knowledge for different product types, allowing for thorough and detailed inspections.
Reliable reporting: Detailed PSI reports provide buyers with actionable insights to approve shipments, request corrective actions, or reject non-compliant products.
Using a third-party PSI provider like Welle Inspection helps buyers mitigate risks, maintain supply chain integrity, and strengthen trust with overseas suppliers.
2. Buyer-Appointed or In-House Inspection Teams
Some companies may choose to perform inspections through in-house teams or buyer-appointed pre delivery inspection companies. This approach can be cost-effective for recurring shipments or products with established quality standards. In-house teams offer:
Direct oversight and alignment with company-specific quality requirements
Immediate access to production and documentation
However, in-house inspections may lack the objectivity and independent verification that third-party inspection services provide, making them less suitable for international trade where impartiality is critical.
Can the Criteria for Pre-Shipment Inspection Be Customized?
Yes. Pre-Shipment Inspection (PSI) criteria are fully customizable to meet the unique requirements of each buyer, product, or industry. Customizable inspections ensure that quality checks are aligned with real business needs, regulatory standards, and contract specifications.
What Can Be Customized?
Buyer-specific requirements: Tailor inspections to match exact product specifications, including materials, dimensions, and functionality.
Industry standards: Include checks according to relevant standards such as ISO, ASTM, EN, or other sector-specific guidelines.
Regulatory compliance: Verify adherence to mandatory regulations, certifications, or labeling requirements for specific markets.
Functional and safety tests: Conduct specialized tests, such as electrical safety checks for electronics or durability tests for automotive components.
Benefits of Customized PSI
Customizable inspection criteria allow buyers to reduce the risk of defects, ensure compliance, and protect their brand reputation. Industries dealing with specialized or complex products—such as electronics, automotive, or apparel—benefit the most, as PSI can focus on the most critical aspects of quality and performance.
Partnering with an experienced inspection company like Welle Inspection ensures that each inspection is tailored, precise, and actionable, giving buyers confidence that only compliant products are approved for shipment.
What Are the Different Types of Pre-Shipment Inspections?
Pre-Shipment Inspections (PSI) can be tailored to different products, risk levels, and order requirements. Selecting the appropriate inspection type ensures that products meet quality standards, regulatory compliance, and buyer expectations before shipment.
Common Types of Pre-Shipment Inspections
Standard PSI (AQL-Based Sampling)
Uses statistically valid sampling methods such as ANSI/ASQ Z1.4 or ISO 2859-1. Inspectors assess a representative portion of the batch efficiently, identifying defects without checking every item.Full Inspection (100% Check)
Every item in the shipment is inspected. Suitable for high-value, critical, or high-risk products where even a single defect could be unacceptable.Visual-Only Inspection
Focuses on appearance, workmanship, and packaging, identifying visible defects without functional testing. Ideal for products where aesthetics are critical.Functional and Performance Inspection
Products are tested for operational performance, safety, and functionality. Commonly applied to electronics, machinery, and other technical goods.Compliance-Focused Inspection
Ensures that products meet regulatory and industry standards, such as CE marking, RoHS, or other market-specific requirements, reducing the risk of shipment rejection or customs delays.Consignment-Wise Inspection
Conducted for each shipment individually, providing a high level of confidence in product quality. Common for international trade, high-value orders, or sensitive goods.In-Process Quality Control (IPQC)
Inspections during production help identify quality issues early, allowing corrective actions before the entire batch is completed, ensuring consistent manufacturing standards.Self-Certification
Suppliers inspect and certify their own products. While faster and more cost-effective, this method may lack independent verification, which is important for higher-risk shipments.Government-Mandated vs. Voluntary Inspections
Government-Mandated PSI: Required by certain countries to meet import regulations, including safety, environmental, or health standards.
Voluntary PSI: Conducted at the buyer’s discretion to verify product quality and compliance before shipment.
What Do Inspectors Examine During a Pre-Shipment Inspection?
During a Pre-Shipment Inspection (PSI), inspectors assess products across multiple dimensions to ensure they meet client specifications, quality standards, and regulatory requirements. The evaluation covers the following key areas:
1. Product Conformity
Inspectors verify that items match the client’s approved specifications. This includes checking dimensions, materials, colors, and overall appearance against agreed standards. Conformity checks ensure the delivered products meet expectations without variations that could affect usability or marketability.
2. Workmanship and Quality Consistency
The overall workmanship is examined for consistency across the batch. Inspectors identify defects such as scratches, dents, misaligned components, or other imperfections that impact product quality.
3. Functionality Testing
For electronic or mechanical products, inspectors conduct operational and performance tests to ensure items function correctly under normal usage conditions. Malfunctioning or non-functional products are flagged for corrective action.
4. Safety and Regulatory Compliance
Safety assessments verify adherence to relevant standards for the target market. This may include electrical safety tests, impact and durability checks, and verification of certifications such as CE, UL, or RoHS. Ensuring compliance helps prevent customs issues and protects end-users.
5. Packaging and Labeling
Inspectors examine packaging integrity to confirm goods are protected for transit. Labels are checked for accuracy, completeness, and regulatory compliance, including batch numbers, safety instructions, and country of origin.
6. Defect Classification
All defects are classified as critical, major, or minor, supporting clear pass/fail decisions and providing buyers with actionable information for shipment approval or corrective actions.
What Industries Use Pre-Shipment Inspection?
Pre-Shipment Inspection (PSI) is widely used across multiple industries to ensure product quality, safety, and regulatory compliance before shipment. It is especially important for sectors where defects or non-compliance can lead to financial loss, safety hazards, or reputational damage.
Key Industries Using PSI
Industrial Machinery and Equipment: Inspections confirm that complex machinery meets specifications, safety requirements, and performance standards, reducing risks of equipment failures and operational delays.
Automotive Parts and Components: PSI ensures parts conform to technical specifications, functional performance, and safety standards, minimizing the risk of defective components entering the supply chain.
Electrical and Electronic Products: Inspections verify electrical safety, operational functionality, and compliance with industry standards, preventing functional failures or safety hazards.
Hardware and Metal Manufacturing: Quality, dimensions, and material conformity are checked to maintain consistency and prevent defective shipments.
Consumer Goods: Items such as appliances, household products, and other consumer goods undergo PSI to ensure durability, safety, and regulatory compliance.
Textiles and Apparel: Fabric quality, stitching, color consistency, and label accuracy are verified to meet customer expectations and industry standards.
Medical Equipment: Critical inspections are conducted to ensure functionality, durability, and adherence to healthcare regulations, safeguarding patient safety.
Factories Requiring Social Compliance Audits: PSI is often combined with inspection in process or social compliance audits to achieve comprehensive supply chain quality and ethical compliance.
By applying PSI across these industries, buyers can mitigate risks, maintain product standards, and ensure customer satisfaction.
Common Mistakes in Pre-Shipment Inspection and How to Avoid Them
A China pre-shipment inspection (PSI) is vital for ensuring product quality, regulatory compliance, and customer satisfaction. However, several common mistakes can reduce the effectiveness of PSI. Welle Inspection helps buyers and suppliers identify these pitfalls and implement strategies to avoid them.
1. Not Allowing Enough Time for Inspection
Rushing a PSI can result in missed defects, incomplete checks, or overlooked compliance issues. Welle Inspection pre-shipment inspection services in China emphasize careful planning, ensuring enough time is allocated for:
Comprehensive visual and functional inspections
Packaging and labeling verification
Documentation review and compliance checks
Planning in advance helps detect and resolve issues before shipment, avoiding costly returns or rework.
2. Lack of Clear Product Specifications
Inspectors rely on precise standards to evaluate product quality. Without detailed product specifications, quality control criteria, and industry standards, inspections may miss critical defects. Welle Inspection ensures all specifications are clearly communicated, including:
Material and workmanship requirements
Functional and safety standards
Packaging, labeling, and regulatory compliance details
Clear guidance helps inspectors deliver accurate results that match buyer expectations.
3. Not Using Qualified Inspectors
Using untrained or inexperienced inspectors can compromise the reliability of PSI. Welle Inspection employs certified, skilled inspectors who are trained in pre-shipment inspection for China manufacturers, ensuring:
Consistent application of quality standards
Accurate assessment of workmanship, functionality, and packaging
Proper identification of regulatory non-compliance
Partnering with qualified inspectors reduces risk and strengthens supply chain confidence.
4. Poor Timing of Inspection
Conducting PSI too early or too late in production can yield inaccurate results. Welle Inspection recommends scheduling inspections when production is 80–100% complete, allowing inspectors to:
Assess a representative sample of finished products
Identify defects before final packaging
Ensure that quantity, quality, and compliance meet order requirements
Correct timing ensures that issues are addressed without delaying shipment or increasing costs.
Welle Inspection’s expert pre-shipment inspection services in China help buyers avoid these common mistakes, safeguarding product quality, regulatory compliance, and brand reputation.
How Do Pre-Shipment Inspections Mitigate Risks in International Trade?
Pre-Shipment Inspections (PSI) play a crucial role in reducing risks for importers and ensuring smooth international trade. By verifying product quality and compliance before shipment, PSI helps maintain supply chain integrity and protects both financial and brand interests.
Key Ways PSI Mitigates Trade Risks
Identifying Defects Before Shipment
PSI allows buyers to detect defective or non-conforming products early, preventing substandard goods from reaching the market. This proactive approach reduces the likelihood of rework, returns, or customer complaints.Ensuring Regulatory Compliance
Inspections verify that products meet relevant industry standards and international regulations, such as CE marking, UL certification, or RoHS requirements. Compliance is essential for legal import, distribution, and avoiding customs delays.Providing Objective Evidence
Detailed PSI reports document inspection results, including defects, deviations, and corrective actions. These reports serve as evidence for quality assurance and support dispute resolution with suppliers if issues arise.Protecting Against Financial Loss
By confirming product quality before payment and shipment, PSI helps buyers avoid costs associated with defective items, non-compliance penalties, and shipment delays.Enhancing Supply Chain Transparency
Combining PSI with inspection in process (DUPRO) strengthens oversight across production and logistics stages, ensuring consistent quality and reliability throughout global sourcing projects.
By implementing PSI, importers gain confidence that products meet specifications, comply with regulations, and arrive ready for market, significantly reducing risks inherent in international trade.
How Are Sampling Procedures and Acceptable Quality Limits Determined?
At Welle Inspection, understanding how sampling procedures and Acceptable Quality Limits (AQL) are determined is critical for effective pre-shipment inspection services in China. These procedures allow inspectors to evaluate product quality and compliance without checking every item, saving time while ensuring accuracy.
Standardized Sampling Procedures
For every China pre-shipment inspection, Welle Inspection uses internationally recognized statistical methods, such as ANSI/ASQC Z1.4 (ISO 2859-1). These procedures:
Ensure random selection of items for inspection.
Provide a representative sample reflecting the overall batch quality.
Reduce the risk of undetected defects before shipment.
Determining Sample Size
The sample size depends on the total quantity of the shipment and the inspection level. Using these criteria ensures:
A statistically valid inspection.
Efficient use of resources while maintaining thoroughness.
Early detection of potential quality issues during pre-shipment quality control.
Setting Acceptable Quality Limits (AQL)
The AQL defines the maximum percentage of defective products allowed in a shipment:
Tailored to the buyer’s quality expectations and industry requirements.
Lower AQL thresholds are applied for critical or safety-sensitive items, such as electronics or medical devices.
Helps maintain compliance with international standards and customer satisfaction.
By applying AQL sampling and strict quality limits, Welle Inspection ensures that your pre-shipment inspection in China accurately reflects the quality of your goods, prevents shipment of defective products, and protects your brand reputation.
What Happens If Products Fail a Pre-Shipment Inspection?
When products fail a pre-shipment inspection (PSI), it’s crucial to have a clear plan for resolving the issues identified in the inspection report. The next steps typically involve negotiating with the supplier to determine the most effective remedial actions, which can range from reworking the products to order cancellation. The approach you take will depend on the severity of the quality issues and the terms of your purchase agreement.
- Rework or Repair: If the inspection report highlights minor issues that can be easily corrected, arranging for the supplier to rework or repair the products is often the most practical solution. This option allows for quality adjustments without delaying the shipment significantly. However, it’s essential to have the supplier verify these corrections and potentially schedule a re-inspection to ensure that the items now meet the required standards.
- Replacement of Defective Units: In cases where a portion of the goods does not meet the agreed-upon specifications, you might negotiate for replacements of the defective units. This option is particularly useful when only a small percentage of items are affected, allowing you to receive a complete and compliant shipment.
- Order Cancellation: When quality issues are significant or extensive, and the supplier cannot make timely corrections, canceling the order may be necessary. This approach is typically a last resort and should be pursued only if quality cannot be assured even with corrective actions.
- Partial Acceptance with Adjusted Pricing: Another possible outcome is accepting the products with defects but negotiating a price adjustment. This solution is suitable if the defects do not affect functionality significantly, and the items can still be used. Ensure that both parties agree on the compensation to avoid future disputes.
Why Choose Welle Inspection for Your PSI in China?
Welle Inspection provides reliable, professional, and comprehensive Pre-Shipment Inspection (PSI) services designed to protect your product quality, brand reputation, and supply chain integrity.
Experienced Inspectors
Our team consists of certified quality engineers and inspection professionals with expertise across multiple industries, including electronics, automotive parts, consumer goods, medical equipment, and industrial machinery. Each inspector is trained to identify defects, verify compliance, and ensure your products meet the highest standards.
Comprehensive PSI Services
Welle Inspection offers full PSI coverage, including:
Visual inspections for workmanship and appearance
Functional and performance testing
Packaging and labeling verification
Regulatory compliance checks (CE, RoHS, REACH, and other international standards)
This ensures your products are thoroughly evaluated before shipment, minimizing risks and surprises.
Fast and Transparent Reporting
Our detailed PSI reports are delivered promptly, often on the same day as inspection, enabling you to make timely, informed decisions about shipment approval, corrective actions, or re-inspection.
Customizable Solutions
Inspection criteria are fully tailored to your products, industry, and quality expectations, including buyer-specific specifications, functional or safety tests, and regulatory compliance checks.
Global Reach and Reliability
Whether your goods are produced in China, Southeast Asia, or other sourcing locations, Welle Inspection can provide on-site inspections quickly, ensuring consistency and transparency across your global supply chain.
Trusted Partner for Your Supply Chain
By choosing Welle Inspection, you gain a reliable partner committed to protecting your brand, verifying product quality, and maintaining smooth operations from production to delivery.
Contact Welle Inspection today for a quote and secure your shipment with confidence.
Secure Your Supply Chain with Welle Inspection Today
Frequently Asked Questions (FAQ)
Q1: What is the difference between a PSI and a factory audit?
A PSI inspects finished goods for quality and compliance before shipment, while a factory audit evaluates manufacturing capability and processes.
Q2: How many units are checked in a PSI?
Sample size is determined using AQL sampling (ISO 2859-1) to ensure statistically valid inspection results.
Q3: When should I schedule a PSI?
Ideally, when production is 80–100% complete and goods are fully packaged, 1–2 weeks before shipping.
Q4: Can Welle Inspection perform functional and safety tests?
Yes, we conduct functional, safety, reliability, and specialized tests as required by product type and client specifications.
Q5: How quickly is the PSI report delivered?
Welle Inspection provides a detailed report within 48 hours, including photos, defect classifications, and recommendations.