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Question:

Ordinary plywood is divided into four categories

Ordinary plywood is divided into four categories

Answer:

Thickness specifications for the 6,9,12,15,18 and so on. The main performance indicators for the water content of 4 to 13%, the expansion of water thickness ≤ 12%, as well as tensile strength, bending strength, grip nail force.
According to different density, divided into 80, 70, 60 three categories. Quality level for the premium, one, two three
Wood fiber or other plant fiber as raw material to be pressed into a density of 0.50 ~ 0.88g / cm3 plate

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