... Raw Material: Natural plant fiber, magnesium sulphate cement, glass fiber cloth, etc Fire Resistance: Incombustibility A1 Class ... sulphate cement as cementitious material, used plant fiber and glass fiber as reinforced material, and is processed by ... Major Element:Natural plant fiber, magnesium sulphate aluminium cement, glass fiber cloth, expanded perlite. Fire ResistanceIncombustibility A1 Class( ...