Professional importers qualify a factory before they send deposit for branded goods. Photos and a polished website are not enough. This checklist is for buyers evaluating an insole manufacturer in China — document checks, production capability, quality systems, and basic social/environmental signals — so you can walk a plant (or brief a third-party auditor) with a clear scorecard.
Before You Visit: Document Checks
| # | Ask for | Why it matters |
|---|---|---|
| 1 | Business license | Confirms legal entity |
| 2 | Quality system evidence (e.g. ISO 9001 claims) | Verify certificates through issuing bodies; do not trust PDFs alone — see ISO resources |
| 3 | Export experience in footwear / insoles | Category familiarity reduces spec translation errors |
| 4 | Recent production photos or video with date context | Helps confirm a real plant exists |
| 5 | Reference willingness (where allowed) | Other buyers’ experience beats slide decks |
On Site: Capability Signals
| # | Look for | Green flag | Red flag |
|---|---|---|---|
| 6 | Molding / pressing equipment | Owned presses and mold storage | Empty floor; everything “at partner factory” |
| 7 | Material storage | Foam stored protected from sun/rain | Open-yard foam aging in weather |
| 8 | QC tools | Hardness gauge, flex checks, adhesion checks | No measurement tools on the floor |
| 9 | Batch records | Lot, date, operator, material batch | No traceability when defects appear |
| 10 | Capacity honesty | Clear daily output ranges for your construction | Impossible claims with no line evidence |
Quality System Checks
- Incoming material checks and supplier certificates
- First-article inspection when a bulk lot starts
- Defined final sampling approach (not “we look at a few pairs”)
- Corrective action records when defects happened before
- Calibration stickers or records on measuring tools
Social & Environmental Basics
- Clear exits, basic PPE where processes need it
- Working-hour claims that match what you observe
- Responsible handling of foam scrap (no open burning)
- No underage labor indicators
- No “special payment” requests outside the contract
How to Score the Visit
Mark each point Pass / Partial / Fail. Strong Pass across capability + QC usually means you can proceed with a paid sample and a clear CAPA list for any Partial items. Multiple Fail marks on traceability or equipment ownership mean you should keep sourcing.
Learn who we are on About, see constructions on Products, and schedule a conversation or visit. Pair audits with a clean brief using the RFQ checklist.
U.S.-based importers can also review general supplier due-diligence guidance from the International Trade Administration.
Frequently Asked Questions
Can we audit before placing a bulk order?
Yes — that is the point. Qualify first, then sample, then bulk.
What if we cannot travel to Guangzhou?
Use a reputable third-party inspection firm and share this checklist as the scope. We can host audits at the Baiyun District, Guangzhou facility for qualified buyers.
Which product types should we watch on the line?
Match the audit to what you will buy — orthotic multi-zone builds need different fixtures than flat comfort EVA. Examples: Multi Zone Orthotic Sports Insole, Dark EVA Flat Comfort Insole.
Scoring Summary (Quick Extract)
| Result pattern | Interpretation | Next step |
|---|---|---|
| Mostly Pass on capability + QC | Low structural risk | Paid sample + written CAPA for any Partial |
| Mixed Pass / Partial | Usable with conditions | Corrective actions before deposit |
| Fails on traceability or owned equipment | High substitution risk | Keep sourcing; do not rely on photos alone |