... are light weight ,enviromental-protective.good for human SPECIFICATIONGypsum board, Ceiling board, Drywall, Paper faced Gypsum board, Building materiala).Main material: gypsumb).for wall partition and ... ).Normal specification: 1200/1220x2400/2440mme).Thickness: 9,9.5,10,12,12.5,12.7,13,15 and 15.9mmLinyi Weicheng Metal ...