The Complete China Sourcing Checklist: From Factory Audit to Final Shipment
Published July 6, 2026 by muzhuo

The importer who skipped step one
A first-time importer from Medellín found a manufacturer on Alibaba selling outdoor furniture. The price was 40% below market. Reviews were good. He transferred a 50% deposit — $8,200 — and waited.
The first clue something was wrong: the factory manager stopped answering WeChat after payment. After three weeks of silence, the Colombian importer asked a local agent to visit the factory address listed on Alibaba. It was an empty office in a residential building. The photos of the factory on the listing were stolen from a legitimate manufacturer.
He lost the full deposit.
That $8,200 could have funded a factory audit ($400-$500), a pre-shipment inspection ($450), and still had thousands left over.
This isn't a horror story — it's a typical Tuesday in China sourcing. But it's entirely preventable with the right checklist.
Phase 1: Supplier Discovery & Vetting (Week 1-2)
🔍 Verify the company exists
Before you even think about pricing, verify these basics:
- Business license: Request a copy of the 营业执照. Match the company name, legal representative, registered capital, and business scope to what they claim.
- Tax registration: Chinese companies must have a valid tax ID. Match it to their business license.
- Factory address on Google Maps: If the "factory" maps to a residential address or shared office building, that's a red flag.
- Alibaba or Global Sources history: Check how long they've been on the platform. A 3-month-old listing with no reviews is risky.
🔍 Cross-check with third-party verification
Use services like:
- Qichacha or Tianyancha: China's business registry databases. Enter the company name in Chinese characters to see legal disputes, registration status, and capital changes.
- SGS verification: A quick supplier check costs around $100.
- Factory audit (recommended): For orders above $10,000, invest in a physical factory audit.
A real factory should be able to provide recent production photos (not stock images). Ask for specific angles — the production line, the quality control station, the warehouse. A scam factory won't have these.
Phase 2: Sample Evaluation & Negotiation (Week 2-3)
📦 The golden sample rule
Never place a production order without approved samples. But here's the trick: the sample is not the product. It's a handcrafted piece made by the factory's best worker with the best materials.
Your evaluation checklist:
| Check item | What to verify |
|---|---|
| Material composition | Is it exactly what you specified? Test weight, thickness, composition |
| Dimensions | Measure everything with tolerances. ±1mm is typical for non-critical parts |
| Color matching | Use a Pantone reference. Lighting in the factory may differ from your office |
| Functionality | Does it work as intended? Test for 50% longer than expected use |
| Packaging | Check material, print quality, insert accuracy |
| Labels and markings | SKU codes, barcodes, country of origin, safety marks (CE, FCC, etc.) |
💰 Negotiation checklist
Before you accept any price, ensure you've clarified:
- Incoterms: FOB (factory loads on vessel) or EXW (you pick up at factory gate)? Most China exports use FOB.
- MOQ: Minimum order quantity. Can you negotiate a trial order of 50-70% of MOQ?
- Payment terms: Common structure is 30% deposit, 70% against BL copy. Never 100% upfront.
- Production timeline: Get a written schedule. Build in buffer days for delays.
- Packaging costs: Are cartons included or extra? What about inner packaging?
- Sample cost: Is it refundable with the first order?
Phase 3: Production Monitoring (Week 3-8)
📋 Mid-production inspection (MPI)
This is the step that first-time importers almost always skip — and then regret. When 20-30% of production is complete, a mid-production inspection can:
- Catch defects early before they're replicated across thousands of units
- Verify production speed matches the schedule
- Confirm raw materials match the approved spec
- Check that the factory isn't switching components (it happens more than you'd think)
👀 What MPI covers
| Check | Detail |
|---|---|
| Raw materials | Match to approved sample. Check for substitutions |
| Work-in-progress | Random sample 10-20 units from the production line |
| Production status | Are they on schedule? 30% complete at the time of visit? |
| Factory organization | Is the floor clean? Are QC checkpoints staffed? |
� A mid-production inspection often saves more money than the final PSI because issues are caught early enough to fix without delaying the shipment.
Phase 4: Pre-Shipment Inspection (Week 7-9)
📦 The PSI checklist
When 80-100% of the order is finished and 80%+ is packed, it's time for PSI. Here's what a thorough inspector checks:
Quality checks:
- AQL sampling per ISO 2859 (typically AQL 2.5 for majors, 4.0 for minors)
- Visual inspection: color, finish, blemishes, assembly quality
- Functional testing: does each sampled unit work as intended?
- Dimension verification: measure against spec tolerances
- Packaging integrity: carton strength, inner packaging, labeling accuracy
Quantity checks:
- Carton count matches packing list
- Units per carton matched to packing list
- Mixed cartons checked for correct SKU combinations
Marking checks:
- Carton marks correct (consignee, port, SKU, quantity)
- Country of origin marking present
- Barcodes scan correctly
- Safety marks applied (CE, FCC, RoHS as applicable)
$450 for a PSI saves you from $20,000+ in defective goods. The math is simple.
Phase 5: Container Loading Supervision (Week 8-10)
🚢 The final checkpoint
After PSI passes, many importers feel the job is done. But CLS is where you verify that the correct goods actually enter the container.
The CLS checklist:
- Empty container inspection — check for holes, rust, moisture, odors
- Pre-loading carton count — physically counted against packing list
- Loading observation — correct stacking, dunnage placement, no damaged cartons loaded
- Partial loading photos — at 25%, 50%, 75%, and 100% full
- Seal verification — seal number recorded and photographed on the report
Without CLS, you're trusting the factory's word that they loaded what they said. Remember the Medellín case at the start? That's what happens when you skip verification.
Phase 6: Shipping Documentation (Week 8-11)
📄 Document checklist for Latin American customs
For shipments to Mexico, Colombia, Brazil, Chile, Peru, and Argentina, these documents are required:
| Document | Purpose | Required for |
|---|---|---|
| Commercial Invoice | Value & product description | All shipments |
| Packing List | Quantity & weight per carton/SKU | All shipments |
| Bill of Lading (BL) | Ownership document | All shipments |
| Certificate of Origin | Tariff preference | FTAs (Mexico, Chile, Peru) |
| Inspection Report | Quality verification | Not mandatory but recommended |
| NOM Declaration | Product safety compliance | Mexico (specific products) |
| ANVISA Certificate | Health/medical compliance | Brazil (specific products) |
🔢 Latin American customs insights
- Mexico (SAT): High scrutiny on NOM-regulated products. Having a PSI or CLS report can reduce inspection likelihood.
- Brazil (Receita Federal): Known for strict documentation enforcement. Every document must match perfectly — one discrepancy triggers full inspection.
- Colombia (DIAN): Ask for pre-inspection before customs clearance. CLS reports help prove container integrity.
- Chile (Aduana): Generally efficient but strict on food, electronics, and textile regulations.
The complete sourcing timeline
| Phase | Duration | Key action | Cost range |
|---|---|---|---|
| Supplier discovery | 5-10 days | Identify 3-5 potential suppliers | Free |
| Factory audit | 2-3 days | On-site verification | $400-$600 |
| Sample evaluation | 7-14 days | Receive, test, approve samples | $50-$200 (samples + shipping) |
| Production | 3-6 weeks | Factory manufacturing | 30%-50% deposit |
| MPI (optional) | 1 day | Mid-production check | $350-$450 |
| PSI | 1 day | Pre-shipment quality check | $400-$500 |
| CLS | 1 day | Loading supervision | $300-$400 |
| Shipping | 25-45 days | Ocean freight to Latin America | $2,000-$8,000 (container) |
💰 Total quality assurance (audit + MPI + PSI + CLS): roughly **$1,500-$2,000**. On a $40,000 order, that's about 4% — and it protects 100% of your investment.
Quick-reference: Red flags at each stage
| Stage | Red flag | Action |
|---|---|---|
| Discovery | Factory address is residential | Reject and find another supplier |
| Sample | Sample differs from photos online | Request new samples, verify factory |
| Production | Factory delays without explanation | Schedule unscheduled MPI visit |
| Pre-shipment | Over 10% defect rate in sampling | Hold shipment, demand rework |
| Loading | Count mismatches packing list | Do not allow loading until resolved |
The bottom line
Sourcing from China to Latin America is a proven business model, but it requires discipline. Each phase of this checklist exists because someone, somewhere, lost money skipping it.
The importers who treat quality assurance as a necessary cost rather than an optional extra are the ones who build sustainable businesses. The ones who skip steps... learn the hard way.
→ — verify your supplier before you pay Book a factory audit
→ — protect every shipment from China to Latin America Schedule PSI + CLS
→ — learn exactly what inspectors check Read our PSI guide
Frequently Asked Questions
❓ How long does a typical China sourcing cycle take?
A full sourcing cycle — from supplier identification to container delivery — takes 6 to 14 weeks for a first-time order. Supplier vetting takes 1-2 weeks, production 3-6 weeks depending on complexity, and shipping to Latin America takes 25-45 days. Reorders with established factories can compress this to 4-6 weeks total.
❓ Do I need both a factory audit and a pre-shipment inspection?
Yes, for first-time orders. A factory audit verifies the supplier exists and can produce to your standards (done before ordering). PSI verifies the actual production batch meets specifications (done before shipment). They serve different purposes at different stages. For repeat orders with trusted suppliers, you may skip the audit but should still do PSI.
❓ What documents should I request from Chinese suppliers?
Business license (营业执照), product test reports (CE, FCC, RoHS, or applicable standards), factory capacity statement, export license, material safety data sheets for relevant products, and references or past order history. For food or medical products, additional certifications like FDA or GB standards may be required.
❓ How do I handle payment terms with Chinese suppliers?
Standard terms for new relationships are 30% deposit / 70% balance against BL copy. T/T (telegraphic transfer) is common. For larger orders ($50,000+), consider L/C (letter of credit). Never pay 100% upfront. Use the inspection report as a release trigger — a CONDITIONAL or FAIL result should hold payment until issues are resolved.
❓ What's the biggest mistake importers make in China sourcing?
Relying on samples alone. Sample quality is rarely the same as mass production quality. The factory puts their best workers on samples. Production runs use regular workers, cheaper materials sometimes, and different shift schedules. Always combine the sample approval with a mid-production inspection and a PSI before shipping.