... two sides of board coated by quality paper. We company have a laboratory with high technology, and strict quality control. We get ... fireproof, moistureproof, sound insulation, flat surface, high intension, besides, it's very easy to apply, which can be cutted, nailed, sawed ... .We have full gypsum board system,Such as: standard, fireproof, water resistant gypsum board and it's accessory system.And also ...