1. Production and processing of the following products: steel wires, iron wires, steel strips, and iron belts; 2. Grooved wires, grooved ribs and various steel product parts for umbrella making; 3. Various steel parts and materials for chain making; 4. Piston rings, valve and shock absorber springs, starter motor shafts, and special high-strength fasteners for automobiles and motorcycles; 5. Pipes, rods, and wires for automobile parts; 6. High-end construction hardware , plumbing equipment and hardware; 7. Precision stamping dies, mold standard parts; 8. Precision bearings; 9. Special production equipment for the above products; 2. Engaged in the wholesale, import and export of various metal materials, Wujiajiaodian, automobile and motorcycle accessories, electronic products and their spare parts (the above commodities do not involve state-owned trade management commodities, and if they involve quota or license management commodities, the application shall be processed in accordance with relevant national regulations).