General business projects are: New building materials research and development; R&D and sales of automobiles, metal materials, building materials, hardware tools, mechanical and electrical products, office equipment, chemical raw materials and their products (excluding dangerous chemicals, precursor chemicals, refined oil); Real estate broker; Corporate image planning; Economic information consulting (excluding restricted items); Domestic trade, import and export of goods and technology; Sales of electronic measuring instruments; Retail of electronic components; Electronic office equipment sales; Wholesale of electronic components; Electronic vacuum device sales; Electronic special materials sales. (Except for the items subject to approval according to law, independently carry out business activities according to law with the business license)