Structural Plywood Standard of The United States: PS 1-09
PS1 or PS 1-09 structural plywood have a load bearing structure suitable for construction uses like sheathing, roofing and subfloor.
Yalong WoodPlywood Company in China
Yalong Wood PS1 or PS 1-09 structural plywood have a load bearing structure suitable for construction uses like sheathing, roofing and subfloor.