综合久久网美利坚合众国,女子赤身跳舞视频大全视频,我和妽妽伦理hd12,欧洲人妻丰满av无码久久不卡_东京热在线_国产午夜AV_成人久久久

Hydrophobic glass wool

Gerui hydrophobic centrifugal glass wool includes two series: hydrophobic roll felt and hydrophobic board. Compared with ordinary centrifugal glass wool, it has excellent waterproof and heat preservation. Glass wool thermal insulation materials mainly rely on the air layer between the material fibers for thermal insulation, and once the ordinary glass wool is damp, it will seriously affect its thermal insulation effect. The hydrophobic heat preservation product, hydrophobic glass wool, produced by gree with high and new technology, overcomes the disadvantage of ordinary glass wool, and has been widely used in curtain wall, air duct, vehicle and ship, pipeline and other construction fields as a more advantageous building material.

Performance index