General items: construction materials sales; wholesale hardware products; hardware products retail; electrical equipment sales; household appliances retail; furniture manufacturing; furniture sales; construction and decoration materials sales; business management; Sales of metal products; lime and gypsum sales; doors and windows sales; flooring sales; light construction materials manufacturing; architectural waterproofing membrane product sales; sales of concrete structural components; asbestos products sales; sales of mechanical and electrical equipment; Sales of chemical products (excluding permitted chemical products), general merchandise, glass products, knitted textiles and raw materials, knitted textiles, Non-ferrous metal alloys, sales of calculator equipment; wholesale of electronic components; sales of fire-fighting equipment; sales of electrical equipment; sales of electrical instruments; sales of electronic products; sales of office equipment; sales of lamps; sales of metal materials; Sales of metal ore; sales of plastic products; network equipment sales; Refractory sales; marketing planning; socioeconomic advisory services; engineering management services; Municipal Facilities Management; Information Technology Advisory Services; Technology service, technology development, technology consultation, Technology Exchange, technology transfer, technology promotion; machinery and equipment sales; machinery and equipment leasing; construction machinery and equipment leasing; Sales of mechanical parts and spare parts (except for projects subject to approval according to law, independently carry out business activities according to business license)