... is widely used for inner wall, ceiling, partition.1.TYPE :A: Standard boardB: Fire-resistant boardC: Water resistant board2.Gypsum board edge:A ... : fire resistant, moisture resistant, sound insulation, heat preservation,etc5. Gypsum Board Parameters: Item Standard requirementsValue of Factual MeasurementDeviation of length ... irradiation Ir ≤ 1.3 (grade A) 0.1Note GB ISO Gypsum Board for Partition wall