particle board/chip board 1 size 1220*2440x44/54/64 2 thickness from 34mm~64mm 3 ... proof particle board or door cor particle board/chip board1 size 1220*2440mm, 2135x915mm, 1220x2135, 1830x2440, 1830x3000mmThickness: from 25mm up to ... resistant, fire retard chipboard: 30minutes, 60minutes, 90 minutes, 120 minutes big size particle board chip board flake board