... CSB Siding plank , it is a kind of calcium silicate board with cedar pattern , medium density and low water absorption ... at impact resistance. It can be used as the base board in the shops, hotels, schools, entertainment places and hospitals ... Compared to other boards (real non-asbestos calcium silicate board) from international marker, it is much worthy. Specification ThicknessWidthLengthmm7.5,9241, ...