What Does a China Quality Inspector Check? Complete Inspection Checklist

What actually happens on inspection day

If you're an importer about to receive your first inspection report from China, you probably have one question: what exactly did the inspector do at the factory?

Most guides give you the brochure version: "visual inspection, functional testing, packaging check."

This guide gives you the real version — minute by minute, checklist item by checklist item — so you know exactly what your inspector should be doing and whether they're doing it right.

Morning: Arrival & Preparation (08:00 - 09:00)

The arrival protocol

A professional inspector arrives before the agreed time. First impressions matter:

• Check in with factory management: Brief the QC manager on the inspection scope
• Request the production file: Packing list, production records, previous inspection reports
• Walk the production floor (before opening any carton):
• Is the assembly line running?
• Are QC checkpoints staffed?
• What's the general atmosphere? Rushed and chaotic = potential quality issues

Setup

The inspector prepares their workspace:

1. Inspection plan — AQL level, sample size, defect classification criteria
2. Equipment check — Calibrate measuring tools, camera batteries full
3. Reference sample — Golden sample or spec sheet ready for comparison
4. Data sheet — Pre-filled with order details, factory info, inspection criteria

Random Sampling (09:00 - 10:00)

How samples are selected

This is the most important — and most commonly faked — part of inspection. A proper inspector:

1. Randomly selects cartons from different stacks around the warehouse, not just the front row
2. Opens bottom-layer cartons — factories sometimes hide rejected units at the bottom
3. Takes from multiple pallets — ensures representative sampling across the whole batch
4. Documents every carton opened — photo of carton mark + contents

Sample size by AQL (ISO 2859, normal level II):

Visual Inspection (10:00 - 12:00)

The detailed visual check

Each sampled unit is examined individually. The inspector checks:

Appearance:

• Color match vs. approved sample (use Pantone or visual reference)
• Surface finish: scratches, dents, bubbles, inconsistent texture
• Assembly quality: gaps, misalignment, loose parts
• Cleanliness: dirt, grease, manufacturing residue
• Weld and joint quality: uniform, no cracks, no sharp edges

Markings and labeling:

• Brand name or logo (correct font, placement, spelling)
• Model numbers and SKU codes
• Country of origin marking
• Safety marks (CE, FCC, RoHS, UL as applicable)
• Barcodes — scan-test every unit's barcode

Packaging (one unit's packaging):

• Inner packaging integrity (polybag thickness, bubble wrap, foam inserts)
• Instruction manual present and in correct language
• Warranty card, accessories all included

Lunch Break (12:00 - 13:00)

The inspector locks the sample room or marks sealed cartons. No units leave the inspection area.

Afternoon: Functional & Measurement Testing (13:00 - 15:00)

Measurement verification

The inspector measures a subset of sampled units against the spec:

Functional testing

Depending on the product, this could include:

• Electronics: Power on/off, button function, screen display, charging test, battery life estimate
• Garments / Textiles: Seam strength, zipper function, button attachment, size measurement
• Toys: Small parts test (mobility), sharp edge check, drop test
• Housewares: Assembly test, stability check, load-bearing test
• Packaging: Drop test (1m onto concrete), stacking compression test

Quantity & Carton Marking Check (15:00 - 16:00)

The carton count

The inspector physically verifies:

• Total carton count — every pallet, every stack, counted
• Units per carton — open a subset of cartons to confirm quantities
• SKU mixing — if multiple SKUs in one carton, verify ratios are correct

Carton marking audit

Report Writing & Issue Discussion (16:00 - 17:00)

Documenting defects

Every defect found is:

1. Photographed — close-up with a ruler for scale
2. Classified — Critical / Major / Minor per AQL classification
3. Recorded — Defect description, which unit, which carton

The inspector assigns a final verdict:

The report package

You should receive within 24 hours:

• Executive summary (PASS / FAIL / CONDITIONAL)
• AQL results table with defect counts
• Photo evidence (typically 50-150+ photos)
• Measurement data sheet
• Packing list cross-check results
• Recommendations and next steps

The complete inspector checklist (printable)

Copy this list and give it to your inspection company. If they don't cover all these points, you deserve a better inspector.

☐ Pre-inspection:

• ☐ Factory floor walkthrough
• ☐ Production file review (packing list, spec sheet)
• ☐ Reference sample vs. spec comparison
• ☐ Equipment calibrated and ready

☐ Sampling:

• ☐ Random selection from multiple locations
• ☐ Bottom and middle cartons included
• ☐ Sample size matches AQL table
• ☐ Sealed or separated sampling area

☐ Visual inspection:

• ☐ Color match vs. reference
• ☐ Surface finish (scratches, dents, bubbles)
• ☐ Assembly quality (gaps, alignment)
• ☐ Markings and labels (brand, model, origin)
• ☐ Barcode scan test
• ☐ Packaging integrity and completeness

☐ Functional & measurement:

• ☐ Dimensions verified (with tolerances)
• ☐ Weight check
• ☐ Functional test (product-specific)
• ☐ Safety checks (sharp edges, stability)

☐ Quantity & packing:

• ☐ Total carton count vs. packing list
• ☐ Units per carton verified
• ☐ SKU mixing confirmed
• ☐ Carton marks audited

☐ Final documentation:

• ☐ Defect photos with scale reference
• ☐ Defect classification (critical / major / minor)
• ☐ AQL results table
• ☐ Verdict and recommendations

What a good inspector does differently

Here's the difference between a checkbox inspector and a real quality professional:

Your rights as the buyer

A professional inspector works for you, not the factory. This means:

• The factory cannot pressure the inspector to pass borderline units
• The inspector controls the sampling — the factory doesn't choose which cartons to open
• The inspector has final say on the verdict, not the factory QC manager
• If the factory refuses access or is uncooperative, the inspector notes it in the report

The bottom line

A quality inspection isn't magic — it's systematic. Every check on the list above exists because real importers have lost real money when that check was skipped.

When you hire an inspector, you're not paying for the 8 hours they spend at the factory. You're paying for the experience to know what to look for, the integrity to report honestly, and the backbone to tell a factory "this isn't good enough."

→ — get the complete inspection checklist applied to your next shipment Book a PSI

→ — tell us about your product and we'll tailor the inspection to your needs Get a quote

→ — understand sampling levels before your next inspection Read our AQL guide

Frequently Asked Questions

❓ How many units does an inspector check during a PSI?

For a typical 1,000-unit order using AQL 2.5 normal level II, the inspector samples 80 units. If 5 or fewer have major defects, the lot passes. The exact sample size depends on your order quantity and chosen AQL level. Higher AQL levels (more strict) require larger samples.

❓ Can I be present during the inspection?

Yes, you or your local representative can be present. However, most importers choose not to because they trust the inspection company and the inspector works more efficiently without supervision. If you want to be present, let the inspection company know in advance so they can coordinate with the factory.

❓ What happens if the inspection fails?

You have options: (1) request the factory to rework defective units and schedule a re-inspection, (2) negotiate a discount based on the defect percentage, or (3) reject the entire batch. Most importers choose option 1 for minor defects. The inspection report documents every issue found, giving you leverage in negotiations.

❓ How long does an inspection take?

A standard PSI for one product takes 1 full day (6-8 hours on-site). For multiple products or very large orders, plan for 2 days. The inspector needs time for thorough sampling, testing, and documentation. Rushing an inspector is how defects get missed.

❓ Do inspectors test product safety in China?

Many inspectors can perform basic safety tests on-site: sharp edge checks, stability tests, chemical screening with x-ray fluorescence (XRF) for lead, and electrical safety checks with multimeters. Specialized safety certifications (CE, FCC, UL) require lab testing, which is a separate service from standard PSI.