General items: Manufacturing of metal packaging containers and materials; Manufacturing of metal wire rope and its products; Building decoration, plumbing pipe parts and other metal products for construction; Metal structure manufacturing; Metal tool manufacturing; Manufacturing of metal products for safety and fire protection; Manufacturing of metal chains and other metal products; Sales of metal wire rope and its products; Sales of metal chains and other metal products; Metal structure sales; Manufacturing of metal fittings for construction; Sales of metal products; Retail of hardware products; Sales of mechanical and electrical equipment; Wholesale of hardware products; Hardware products manufacturing; Sales of mechanical parts and components; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Research and development of metal products (except for projects that need to be approved according to law, independently carry out business activities according to law with the business license)