Plywood Certificates, Test Reports and Market Rules: What to Ask For and How to Check It

A plywood buyer deals with four kinds of document: certificates that show a body checked the mill or the product, test reports that show a sample met a limit, rules that decide whether goods may be sold and papers that tie a lot to all three. This page maps them by destination market and links to the detail page for each.

Destination	Certificate or declaration	Test evidence	Rule	Detail
United States	Certificate from an EPA-recognised third party certifier; panel label	Certifier’s testing on the ASTM E1333 basis	TSCA Title VI, California CARB	TSCA Title VI
European Union	Declaration of Performance (EN 13986); factory production control certificate where required	EN 717-1 chamber report; EN 314 bond report	REACH entry 77, 0.062 mg/m3 from 6 August 2026	EU formaldehyde limits
Japan	JAS certificate from a registered body; JAS mark	Desiccator results behind the F-star grade	JAS plywood standard; Building Standards Law	JAS for an overseas mill
Canada	Declaration of certification; bilingual label	Certifier’s confirmation or TSCA Title VI certification	SOR/2021-148, 0.05 ppm	Canada rules
California	Emission label plus a possible Prop 65 warning	Lot test report	CARB, TSCA Title VI and Prop 65	Prop 65 and plywood
Structural sheathing, United States	Accredited agency stamp (PS 1)	Agency programme tests	PS 1-22	PS 1
Any market	Mill certificates of any kind	Laboratory report on the lot	Contract	Verify certificates, read a test report, certificate of conformity and ISO 9001 at a mill

Reading order for a first import

1. Name the destination rule. The US needs a certificate and a label, the EU needs a test result against a legal limit and a Declaration of Performance, and Japan needs a JAS grade and mark.
2. Check the certificate. Match name, site, product scope and dates, then look the certificate up. The verification page lists where.
3. Read the test report. Method, unit, sample ID and lot link matter more than the word “pass”. See the test report page and the test methods comparison.
4. Test your lot. A third party inspection draws samples from the stack. The inspection post covers the instruction.
5. Keep the file. One folder per shipment with the certificate, the label photo, the packing list, the invoice and the report.

Audits, laboratories and shift checks

Three more pages cover the evidence behind a certificate. The laboratory page shows how to read an accreditation scope. The social audit page compares amfori BSCI and SMETA. The mill testing page lists the checks a mill runs at each station. For specific tests and rules, see bending strength, AQL defect classes, CE marking and production control and the Indian BIS rule.

What certificates do not prove

A certificate does not prove your lot passed. It does not prove the legality of the timber, which the EUDR checklist and the Lacey Act post cover. It does not prove where the veneer came from, which matters for duty and is covered in the origin documentation post. Rules on this page are not legal advice. Confirm them with your customs broker or compliance adviser.

PlywoodViet is a matching service. It does not issue or hold certificates and does not verify them for you. Ask the mill for the original, and confirm it with the issuer named on it.