Business scope (general items): Sales of building materials; Sales of building decoration materials; Sales of outdoor products; Sales of metal products; Sales of high-performance non-ferrous metals and alloy materials; Sales of plastic products; Sales of metal materials; Sales of new functional metal materials; Online sales (excluding goods requiring permits); Retail of hardware products; Hardware product research and development; Sales of lime and gypsum; Metal product research and development; Sales of rubber products; Research and development of new material technologies; Promotion services for new material technologies; Sales of daily necessities; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Import and export of goods; Import and export of technology. (Except for items requiring approval by law, business activities may be carried out independently in accordance with the law based on the business license)