The business scope includes general projects: Technology promotion and application services; Research and development of hardware products; Research and development of distribution switch control equipment; Technology intermediary services; Sales of instruments and meters; Sales of electronic measuring instruments; Sales of electronic components and electromechanical equipment; Sales of electronic specialized equipment; Sales of electronic vacuum devices; Sales of display devices; Software sales; Retail of electronic components; Sales of clothing accessories; Luggage sales; Sales of needle textiles and raw materials; Needle textile sales; Sales of raw and auxiliary materials for shoemaking; Sales of daily necessities; Sales of personal hygiene products; Tea set sales; Sales of experimental analytical instruments; Sales of power electronic components; Sales of electrical accessories; Sales of electrical equipment; Sales of lighting fixtures; Sales of electrical and mechanical equipment; Sales of testing machines; Internet sales (except for the sale of goods that need to be licensed); Wholesale of stationery supplies; Wholesale of clothing and apparel; Wholesale of textiles, clothing, and household goods; Wholesale of daily necessities; Wholesale of electronic components; Wholesale of shoes and hats; Wholesale of hardware products; Retail of shoes and hats; Retail of hardware products; Clothing and apparel retail; Intelligent control system integration; Manufacturing of testing machines; Manufacturing of experimental analytical instruments; Manufacturing of electrical instruments and meters; Manufacturing of instruments and meters; Manufacturing of electronic measuring instruments. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law)