Compared with ordinary glass wool，it has such excellent performances as water resistance, thermal insulation.Glass wool insulation mainly relys on the insulation materials of air layer to insulate, while the ordinary glass wool will seriously affect its insulating effect, once exposed to moisture. Newly high-end product-Hydrophobic glass wool,has overcomed the weaknesses and is widely used in curtain walls, air duct,transport equipments,pipes and so on.