1.We are the manufacturer of calcium silicate board product, 2.specification is 1220mm * 2440mm * (5-20mm), 1.The main maerial of products are:siliceous material,calcium material, plant fiber.2.Main characteristics: light,prevent sinking,,hardly out of shape in highly wet enironment,3.good effect on insulation against heat and sound, easy installation,maintenance and construction,4.long life ,no ...