E.P wall partition sandwich boards are based on calcium silicate board as panel, the core filled with lightweight materials such as cement, EPS polystyrene foam particles and fly ash, etc. This product has many comprehensive advantages of solid, light weight, thinner, high strength, shock resistance, fireproof, waterproof, sound insulation, heat insulation, easy cutting, can be arbitrary slotted, dry working, low-carbon and environment friendly. They are widely used in all kinds of building decoration and construction.