Quality Control & Inspection Services
Protect your investment with professional QC inspections at every stage. Detailed photo reports, AQL sampling, and defect analysis — all before your goods leave China.
Why Quality Control Matters
Importing from China without proper QC is risky. Studies show that 15-30% of products from unverified suppliers fail to meet quality standards. Common issues include:
Material Substitution
Suppliers use cheaper materials than agreed, leading to product failures and customer complaints.
Specification Deviations
Dimensions, colors, or features don’t match your requirements, causing returns and negative reviews.
Packaging Defects
Poor packaging leads to transit damage, customs delays, and unsellable inventory upon arrival.
Our QC team catches these issues before they become expensive problems.
Our 3-Stage Inspection Process
Pre-Production Inspection (PPI)
When: Before mass production begins
What we check: Raw materials, components, production setup, first article samples
Why it matters: Catch issues early when changes are cheap and fast. Prevents mass-producing defective goods.
During Production Inspection (DPI)
When: When 20-50% of order is completed
What we check: Semi-finished products, assembly line quality, production consistency
Why it matters: Identify systematic defects early, allow time for rework without delaying shipment.
Pre-Shipment Inspection (PSI)
When: When 80-100% of order is completed and packed
What we check: Final product quality, quantity, packaging, labeling, shipping marks
Why it matters: The last checkpoint before goods leave the factory. Determines if shipment can proceed.
What’s Included in Every Inspection
| Inspection Item | Details |
|---|---|
| Product Quantity | Verify total quantity matches purchase order |
| Visual Inspection | Check for defects: scratches, dents, discoloration, misalignment |
| Dimension Check | Measure length, width, height, weight against specifications |
| Function Test | Test product functionality (electronics, moving parts, etc.) |
| Packaging Inspection | Verify packaging quality, labeling, barcodes, shipping marks |
| AQL Sampling | ANSI/ASQ Z1.4 standard sampling for defect classification |
| Photo Documentation | 50-100 high-resolution photos showing every inspection point |
| Detailed Report | PDF report with findings, defect classification, pass/fail recommendation |
Defect Classification (AQL Standards)
We classify defects according to international AQL (Acceptable Quality Level) standards:
Critical Defects
AQL 0: Defects that could cause harm or violate regulations. Zero tolerance. Example: electrical safety hazard, toxic materials.
Major Defects
AQL 2.5: Defects that make product unsellable or cause customer returns. Example: broken zipper, wrong color, missing parts.
Minor Defects
AQL 4.0: Minor cosmetic issues that don’t affect function. Example: small scratch, loose thread, minor color variation.
Why Choose Yiwu Wanda for QC?
- Local Presence: Our QC inspectors are based in Yiwu, enabling same-day or next-day inspections with no travel costs.
- Experienced Team: Inspectors average 8+ years in quality control across multiple product categories.
- Detailed Reporting: Receive inspection reports within 24 hours with clear pass/fail recommendations and photo evidence.
- Flexible Scheduling: Book inspections online, reschedule at no extra charge if production is delayed.
- Supplier Relationship: We maintain professional relationships with suppliers, ensuring cooperation during inspections.
Pricing
Standard Inspection
$299
per man-day
Up to 8 hours on-site. Includes detailed report within 24 hours.
Full Package
$799
3-stage inspection
PPI + DPI + PSI for complete quality assurance throughout production.
Custom Quote
Contact
for complex orders
Multiple factories, special testing requirements, or ongoing retainer arrangements.
Don’t Risk Your Investment
A $300 inspection can save you $30,000 in defective goods. Book your QC inspection today.
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