... 1).High Strength2).Toughness,abe to be Curved and Molded. The upgrade product of calcium silicate board(TERASUN COMPOSITE BOARD)1 ... be curved and molded, fireproofing, low thermal conductivity. Terasun is the upgrade product of calcium silicate board.Major Element:Natural plant ... , magnesium sulphate aluminium cement, glass fiber cloth, expanded perlite. The upgrade product of calcium silicate board