It uses gypsum as the main material, adding fiber, bonding agents, modifiers, formed by suppressing, mixing and drying. It has the characteristics of fire Prevention, sound insulation, heat insulation, light-weight, high-strength, small shrinkage, and the stability of small, non-aging, anti-moth-eaten. It can use nails, sawing, planning, adhesive and other methods of construction. It is widely used in ceiling, walls, interior walls, plywood .