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Glass wool fibers belonging to a category, is a synthetic inorganic fibers. Glass wool is molten glass fibrosis, cotton-like material, the chemical composition of metallic glass type, it is a inorganic fiber having good shape, small size, density, thermal conductivity go to and fro, thermal insulation, good sound-absorbing properties, corrosion resistance , chemical stability. Chinese name belongs fiberglass wool in a generic category is a man-made chemical composition of inorganic fibers belonging to the genus Glass wool glass fibers in a category, is a man-made mineral fibers. Quartz sand, limestone, dolomite and other natural ore as the main raw material, with some soda, borax and other chemicals into the glass melt. In the molten state, by means of standard external blow thrown into floc fibrils, as the interchange between the fibers and they are intertwined, showing many of the small gap. This gap can be regarded as void. Therefore, glass wool can be regarded as porous materials with good thermal insulation, sound absorption performance.