Certifications, factory audits, business licenses, and the red flags to watch for before you place an order.
Most problems buyers report with Vietnamese suppliers trace back to one of three gaps: not knowing who they were actually dealing with, trusting a certificate that was never checked, or skipping the audit to save time. Each gap is cheap to close before the deposit is paid and expensive afterward.
Confirm the legal entity
Ask for the business registration certificate (in Vietnamese, the Giấy chứng nhận đăng ký doanh nghiệp) and verify the company name, address, and tax code. Vietnam's tax code doubles as the enterprise registration number, and any company's registration details can be looked up on the National Business Registration Portal, so a quick check takes minutes. Make sure the name on the certificate matches the name on quotes, invoices, and the bank account you will be paying into. A factory reluctant to share basic documentation is a red flag, as is a request to pay a personal account rather than a company account. Also ask directly whether the company owns its production facility or subcontracts: trading companies presenting themselves as factories are common and not necessarily a problem, but you should know which one you are working with.
Understand the certifications
FSC and PEFC cover timber sourcing; BSCI and SMETA cover social compliance; ISO 9001 covers quality management; CARB Phase 2 and TSCA Title VI cover formaldehyde emissions from composite wood panels for North America. Match the certifications to your market's requirements rather than treating a long list as a quality signal in itself. Then verify them: FSC certificates can be checked by code on the FSC public database, BSCI and SMETA audit results live on the amfori and Sedex platforms (ask the supplier to share access), and ISO certificates should name an accredited certification body. Check that the certified entity, scope, and expiry date match the factory in front of you. For CARB and TSCA, the factory itself is usually not the certified party; it is the panel supplier that must be certified, and the factory should be able to show purchase records for compliant board.
Audit before you commit
Walk the production line in person or by video, review sample quality, and confirm capacity and lead times. A live video walkthrough on a normal working day is a reasonable first step and costs nothing; look for active workers, raw material stock, finishing and packing areas, and the equipment the factory claims to have. For larger or ongoing orders, a third-party factory audit from a firm such as QIMA, SGS, or Intertek typically costs a few hundred dollars and covers capacity, quality systems, and working conditions in one visit. An approved golden sample should precede any production order, and it should be signed, photographed, and kept by both parties as the reference for the entire run. Combine it with a pre-shipment inspection on the first order and you have covered the two points where most quality disputes begin.