Usually, importing countries make fumigation compulsory for solid wood / timber and logs . But importing countries don’t require fumigation for plywood, blockboard, MDF/HDF, OSB, hardboard, particle board and some other man-made boards . Why ?

The Density of Plywood is higher than the density of the timber species used to manufacture the products . The density of different plywood is listed as follows…

According to US Plywood Standard (APA PS1-95 Construction and Industrial Plywood), plywood can be classified into several grades, such as A-A, A-B, A-C, B-B, B-C, C-C , C-D . The grade refers to the grade of surface covering. The first letter refers to the grade of face veneers and the second letter refers to the grade of back veneers . The better the grade, the nicer the surface.