Detailed Product Description 1.Characteristics Sound Insulation,Heat Insulation,Waterproof,Fireproof, High strength and impact resistant, mouldproof, Sanitation and cleanness, innocuity, etc. 2.Materials MgO,MCL2 and other materials. 3.Specifications 1220mmx2440mm Thickness: 20mm 30mm 50mm Other specifications also available according to customer's request. 4.Use It can be used as tube in hospital, factory, hotel, etc.