... 12.5,12.7,13,15,15.9mm Executive Standard:GB/T 9775-2007 PlasterboardPlasterboard,Ceiling Board,Drywall,Partition BoardPaper Faced Gypsum ... 12.5, 12.7, 13, 15 and 15.9mm Different dimensions can be made as required. ApplicationTechnical Parameters ItemsStandard RequirementsMeasured DataDensityKg ... //4.2RadioactiveInternalIRa≤1.00.1ExternalIr≤1.30.1NoteExecutive Standard : GB/T 9775-2007 Plasterboard