License Projects: Construction Engineering and Construction (Operate in accordance with laws and regulations as required, business scope subject to approval results; General Projects: Sales of metal materials; Research and development of new materials; Research and development of metal products; Technical services, technical development, technical consultation, technical exchange, technology transfer, technology promotion; Sales of metal products; Manufacturing and processing of doors and windows; Sales of doors and windows; Wholesale of hardware products; Research and development of hardware products; Sales of plastic products; Sales of rubber products; Sales of building decoration materials; Manufacturing of mechanical and electrical equipment; Technical import and export; Import and export agency; Goods import and export (except as otherwise required by laws and regulations, operated independently in accordance with the business license and laws).