Quality Control: Where Importers Save or Lose Money

Quality problems are the number-one reason first-time importers lose money. Not scams. Not shipping mishaps. Quality. And the frustrating part is that most quality failures are entirely preventable.

Three Critical Inspection Points

1. Pre-Production Inspection (PPI)

When: Before mass production begins What to check:

• Raw materials conform to specifications
• Colors match the approved sample
• Components are correct
• Production line is set up properly

Why it matters: Catching a material problem before production starts costs a fraction of what it costs after.

2. During Production Inspection (DPI)

When: At 20–30% production completion What to check:

• Output quality matches the approved sample
• Defect rate stays within acceptable limits
• Workers are following the agreed process
• Packaging and labeling are correct

Why it matters: This is your last window to course-correct. A problem spotted at 20% can be fixed. A problem discovered at 100% means rework or rejection.

3. Pre-Shipment Inspection (PSI)

When: 100% produced, 80%+ packed What to check:

• Finished goods against the golden sample
• Function testing (does everything work to spec?)
• Quantity verification (is the full order accounted for?)
• Packaging and labeling (barcodes, language, markings)
• Carton drop test and overall condition

AQL: The Numbers You Need

AQL (Acceptable Quality Level) is the global standard for sampling inspection. The essentials:

See the full comparison table in our China Sourcing 101 guide.

In plain terms: For a 5,000-unit order, you randomly inspect 200 pieces. If you find more than 10 major defects or 14 minor defects, the lot fails.

Classifying Defects

Critical (zero tolerance): Safety hazards, regulatory non-compliance, total loss of function

• Example: exposed wiring on an electrical product; detachable small parts on a children's toy

Major: Product doesn't perform as intended, or exhibits obvious visual flaws

• Example: a zipper that won't close smoothly; a noticeable color shift from the sample

Minor: Small cosmetic imperfections that don't affect function

• Example: a tiny scratch visible only at certain angles; slightly uneven stitching

Universal QC Checklist

Adapt to your specific product:

Visual Inspection:

• [ ] Color matches approved sample (compare under daylight, not fluorescent)
• [ ] Surface finish is consistent (no scratches, dents, or bubbles)
• [ ] Printing and logos are correct (spelling, placement, color)
• [ ] No loose threads, excess glue, or rough edges
• [ ] Assembly is solid — nothing rattles or wobbles

Dimensional Check:

• [ ] Weight matches specification
• [ ] Consistency across multiple samples (not just one perfect unit)

Functional Testing:

• [ ] Core function works correctly
• [ ] Moving parts operate smoothly
• [ ] For electrical products: voltage and continuity testing
• [ ] "Normal use" stress test (drop it, shake it, press every button)

Packaging Check:

• [ ] Barcode scans correctly (scan it — don't just eyeball it)
• [ ] Packaging text is in the correct language
• [ ] Product sits securely in packaging (not loose, not crushed)
• [ ] Carton markings are accurate (quantity, gross weight, dimensions)
• [ ] Carton drop test: dropped from 76cm, product inside undamaged

This is Part 6 of 8 in the Rich Bee China Sourcing 101 series. Previous: Price Negotiation: The China Rules · Next: Shipping from China: A Survival Guide · All chapters: Sourcing 101 full guide