Glass fiber is a material made from very fine strands of glass. These strands are woven together to create a strong, lightweight fabric. Glass fiber is commonly used in various applications, including construction, automotive, and aerospace industries, due to its durability and resistance to corrosion. The production of glass fiber involves melting silica sand and other raw materials at high temperatures, then drawing the molten glass into thin fibers. This process results in a versatile material that can be combined with resins to form composite materials, which are used in everything from boats to sports equipment.