Glass wool is made from quartz sand, limestone, dolomite and other natural ores as the main raw materials, with soda ash and borax added as well as other chemicals. These are melted into glass and, while still molten, blown into fine fibres using an external force to form man-made inorganic fibres. Glass wool belongs to the category of glass fibres and is a type of man-made inorganic fibre. Glass wool is a cotton-like material formed from molten glass fibres, and its chemical composition belongs to the glass category. It has good mouldability, low volume density, low thermal conductivity, good thermal insulation and sound absorption performance, and is resistant to corrosion and chemically stable. Tonnage: 70 tons Life span: 24-30 months