Glass wool is a category of glass fiber, an artificial inorganic fiber. It is produced by fiberizing molten glass to form a fluffy material. Chemically, it belongs to the glass family and is an inorganic fiber. It features good formability, low bulk density, low thermal conductivity, excellent thermal insulation, good sound absorption, corrosion resistance, and stable chemical properties.

Glass wool is a category of glass fiber, a type of artificial inorganic fiber. It is produced primarily from natural ores such as quartz sand, limestone, and dolomite, along with some chemical raw materials like soda ash and borax, which are melted to form glass. In the molten state, external force is used to blow and spin it into fluffy fine fibers. The fibers are interlocked in a three-dimensional crisscross pattern, creating numerous tiny gaps. These gaps can be considered as pores. Therefore, glass wool can be regarded as a porous material with excellent insulation and sound-absorbing properties.