... ,100mmFeature: Economic price, largely using, water proofing, sound proofing, hot proofing.Rock wool sandwich panelsUse for: roof and ... 1150*50,75,100mmFeature: Strong in hot, fire proofing, sound proofing. Professional material for fire.Polyurethane (PU) sandwich panelsUse for: roof ... use in: The buildings in high requirement of fire proofing and warming keeping; such as medicine, army, foodstuff ...