BASF Spare Part Warehouse Project is the expansion of chemical industry zone, which is divided into two units: Spare Part Warehouse and Prefabrication Yard. The Prefabrication Yard is light steel portal frame structure, which is about 1,600m2. The roof is made of double-layer color steel plate and the sandwich layer is 50mm glass wool. The spare parts warehouse is about 600m2. The roof is made of double-layer color steel plate, and the sandwich layer is 50mm glass wool, with the double-layer color steel plate and hidden purlin.