General projects: Manufacturing of metal packaging containers and materials; Sales of metal packaging containers and materials; Manufacturing of glass thermal insulation containers; Manufacturing of metal chains and other metal products; Manufacturing of capacitors and their supporting equipment; Sales of high-performance non-ferrous metals and alloy materials; Sales of metal chains and other metal products; Manufacturing of metal tools; Sales of new metal functional materials; Manufacturing of metal structures; R & D of metal products; Manufacturing of plastic packaging boxes and containers; Manufacturing of metal cutting machine tools; Sales of capacitors and their supporting equipment; Metal cutting processing services; Sales of metal forming machine tools; Technical services, technical development, technical consultation, technical exchanges, technology transfer, and technology promotion; Science and technology intermediary services; Sales of security equipment; Manufacturing of security equipment; Manufacturing of metal products for safety and fire protection; Sales of fire-fighting equipment; Sales of rubber products; Manufacturing of rubber products; Sales of metal products; Packaging services; Manufacturing of gas and liquid separation and purification equipment; Sales of gas and liquid separation and purification equipment; Manufacturing of pumps and vacuum equipment; Sales of pumps and vacuum equipment; Domestic freight forwarding; Domestic trade agency; Goods import and export; Import and export agency (Except for projects that are subject to approval in accordance with the law, independently carry out business activities that are not prohibited or restricted by laws and regulations).