Guides / Compliance

Plywood Standards by Market: Japan, Korea and India

September 21, 2026

Three markets ask for national marks on plywood, and all three work the same way: a standard, an audit and a mark on the panel. The lead times are long enough that this belongs in a sourcing decision, not in a shipping instruction.

Japan: JAS

The Japanese Agricultural Standard covers plywood types, bond classes, dimensions and formaldehyde emission. Japanese buyers usually ask for two things together: the JAS grade for the product and the formaldehyde class, written F four star for the lowest emission class.

What matters for a buyer:

• JAS certification applies to a registered factory, audited by a certification body
• The mark appears on the panel and carries the certification number
• A mill that has never held JAS cannot be brought into it inside one order cycle

Korea: KS

Korean buyers work to the KS standards for plywood, with the emission class agreed in the contract. Korean formwork buyers also specify the film by name, and the word Tego is used commonly enough in enquiries that it is worth confirming whether the buyer means that specific film or a phenolic film in general.

Two lines to settle before production:

1. Which KS standard and grade applies to the product
2. The formaldehyde class, written into the contract rather than assumed

India: BIS

India has brought plywood under a quality control order, so covered products need BIS certification and the standard mark. The relevant standards include the general purpose plywood standard and the marine plywood standard, with the moisture grades written as MR, BWR and BWP.

For a Vietnamese mill this runs through the foreign manufacturers route, which includes a factory inspection and an ongoing licence. Practical effects:

• The number of Vietnamese mills holding it is small
• It changes who can quote your order, which is a sourcing constraint rather than a paperwork step
• Scope and dates have moved, so confirm the current position before you plan around it

How the three compare

	Japan JAS	Korea KS	India BIS
Covers	Product standard and emission class	Product standard and emission class	Product standard, moisture grade
Factory audit	Yes	Depends on the route	Yes, for foreign factories
Mark on the panel	Yes	Yes	Yes
Realistic lead time	Months	Months	Months

What this means for your enquiry

If your destination market requires a mark, say so in the first line of the enquiry. It is not a detail, it is a filter: it decides which mills can quote at all, and a mill that answers “we can arrange it” without holding the certification is describing a project, not a capability.

If your market does not require a mark, do not ask for one. Certification narrows the supply base and adds cost, and buyers sometimes copy a requirement from another market and pay for it twice.

The US and EU equivalents of this question are in CARB P2 and TSCA Title VI and EUDR for plywood.

Frequently asked questions

Keep reading

• Formaldehyde Tests for Plywood: Chamber vs Desiccator
• Fire Retardant Plywood: Grades, Test Methods and Honest Claims