... ,beautiful decorate, waterproof, environmental and economized Detail description of the prefab house1) Structurelight: Steel as its main ... 50,75,100mmFeature: Strong in hot, fire proofing, sound proofing. Professional material for fire.Polyurethane (PU) sandwich panelsUse for: ... Magnesium.Widely use in: The buildings in high requirement of fire proofing and warming keeping; such as medicine, army, ...