--Building wall, roofing.--Refrigeration unit and equipment for air-conditioning system--Frozen water pipe--Condensing water pipe--Air duct and hot water pipeline Features:  1.The

Qiushui rock wool products are free of asbestos, and do not apply any composition harmful to environments such as CFCs, HFCs and HCFCs etc, no harm to human health, do not increase the risk of cancero