Glass fiber reinforced plastic ducts are made by using modified cement as the binder, glass fiber cloth as the reinforcing material, and the third-generation modified additives with significant effects. The key technological aspect is the domestic pioneering modification of the materials used, and the new process involves combining two different performance binders in the structure. Non-combustible inorganic glass fiber reinforced plastic ducts are mainly used for central air conditioning air supply and hot air supply in buildings with centralized refrigeration and heating systems. These ducts are primarily applied in industrial factories, mines, civil air defense projects, and ventilation and air conditioning engineering in public buildings, such as textile factories, cinemas, hotels, shopping malls, and air-raid shelters. They can also be used for the exhaust chimneys of chemical industries and other industries, storage tanks for water, various oils, and chemical liquids, as well as drainage systems in construction projects.