wall and roof Sandwich panels 1.easy installation, safe use 2.low cost, water proofing, heat insulation 3.cycling use wall and roof Sandwich panels: Steel Thickness0.35~0.8 mmPanel thickness50/75/100/125/150 mmEffective width(1) 950mm ---for roof before is(2) 1150mm---for wallLengthAccording to customer's request,less than 11.8mMaterialsInner is Rockwool,two sides is Color steel ...