Import and export of goods and technology; Import and export agency services; Sales of Class II medical devices; Sales of automobiles; Sales of machinery and equipment; Sales of electronic components and electromechanical assemblies; Wholesale of auto parts; Wholesale of motorcycles and motorcycle parts; Sales of refrigeration and air conditioning equipment; Sales of specialized environmental protection equipment; Sales of office equipment; Sales of electronic products; Sales of electrical equipment; Sales of timber; Sales of furniture; Sales of arts and crafts and ceremonial supplies (excluding ivory and ivory products); Sales of metal structures; Sales of rubber products; Wholesale of hardware products; Sales of chemical products (excluding licensed chemical products); Sales of construction and decoration materials; Sales of plastic products; Sales of communication equipment; Sales of office supplies; Sales of general merchandise; Sales of knitwear and textiles; Wholesale of stationery; Wholesale of sporting goods and equipment; Wholesale of computer software, hardware, and peripherals; Sales of audio-visual equipment; Trading of wires and cables; Sales of leather products; Wholesale of cosmetics; Wholesale of clothing and accessories; Wholesale of footwear and headwear; Used car brokerage; Sales of complete new energy vehicles. (Business activities are conducted independently and in accordance with the law, based on the business license, except for items requiring prior approval as prescribed by law. )