How to Vet a Factory Before Placing Your First Order

Placing an order with a factory you haven't properly vetted is one of the most common and costly mistakes in international sourcing. The due diligence process isn't glamorous, but it separates buyers who consistently receive what they ordered from those who spend months resolving quality disputes, chasing refunds, or rebuilding their supplier base from scratch.

Here is a systematic factory vetting process that works.

Step 1: Verify the Factory Exists and is Legitimate

Before anything else, confirm you are dealing with an actual manufacturer and not a trading company misrepresenting itself. Trading companies are not inherently bad partners, but you should know which you're dealing with.

Request the factory's business license. In Vietnam, this is the Giấy chứng nhận đăng ký doanh nghiệp (Business Registration Certificate). It should list the company's legal name, registration number, registered address, and business activities. Cross-check the registration number against Vietnam's National Business Registration Portal (dangkykinhdoanh.gov.vn).

Request photos of the factory floor, production equipment, and workforce. A legitimate manufacturer will provide these without hesitation. Ask for a live video tour if you cannot visit — this has become standard practice since COVID.

Step 2: Assess Capacity and Fit

A factory that is too large or too small for your order creates problems. A 500-unit order at a factory producing 50,000 units per month will receive zero attention. An order that represents 80% of a factory's capacity creates a single-customer dependency risk.

Ask for:

- Current monthly production capacity for your product category

- Current customer count and approximate export volume split

- Lead time at their current capacity utilization level

A factory producing for brands you recognize in your category is a meaningful signal of technical competence and compliance sophistication.

Step 3: Review Certifications

Certifications tell you what quality and compliance systems exist in the factory.

ISO 9001 — Quality management systems. The baseline for any serious manufacturer.

ISO 14001 — Environmental management. Required by some retail buyers and ESG frameworks.

OEKO-TEX Standard 100 — Textiles only. Certifies products are free of harmful substances.

FSC — Wood products. Chain-of-custody certification for sustainable forestry.

CE marking — Electronics and machinery sold into the EU. Self-declaration of conformity.

BSCI / SA8000 — Social compliance audits. Required by major European retailers.

Always request the actual certificate documents and verify they are current. Certificates expire and factories don't always proactively renew them.

Step 4: Commission a Third-Party Factory Audit

For any order where the financial exposure justifies it (typically $5,000+), a third-party factory audit provides independent verification of what you've been told.

Factory audits cover: production capacity, equipment condition, quality control processes, labor practices, fire safety, structural integrity, and management systems. Cost is typically $300–$600 USD depending on location and auditor. Turnaround is usually 2–5 business days.

Reputable audit companies with operations across Vietnam and SEA: SGS, Bureau Veritas, QIMA, Intertek, AsiaInspection.

If a factory declines an audit, decline the order.

Step 5: Order and Evaluate a Paid Sample

Never place a bulk production order without a paid sample. Your sample order should include:

- A detailed product specification document (dimensions, materials, tolerances, packaging, labeling)

- Specific test criteria the sample must pass

- Clear acceptance/rejection criteria defined upfront

Evaluate the sample against your spec, not against your memory of what you wanted. Document discrepancies in writing before any follow-up conversation.

Step 6: Check References

Ask for two or three reference contacts at current export customers in your target market. A factory that cannot or will not provide references is a red flag.

When you speak to references, ask specifically: Did the factory deliver on time? Was quality consistent between sample and bulk production? How did they handle problems when they arose?

The way a factory handles problems is more predictive of the relationship quality than the absence of problems. Every supplier has occasional issues. Good ones communicate early and solve them.