This is Peking Northern Excellent Construction Material Co., Ltd. Our company is engaged in building material, we main produce a series of gypsum board, mineral fiber ceiling , gypsum board and mineral fiber ceiling production line. The type of gypsum board include fire-proof gypsum board, water-proof gypsum board, damp-proof gypsum board, general gypsum board and so on.The specification respectively is 1.2m x 3m, 1.2m x 2.4m and so on. The thickness is 9.5mm, 12.5mm etc.our product is high quality and reasonable price. In addition we receive customized order.We will offer you the best product, the competitive price, the good service. if you are interested in them, please contact me.