Sales of integrated circuit chips and products; Integrated circuit sales; Sales of electrical equipment; Sales of electrical instruments and meters; Sales of plastic products; Retail of electronic components; Sales of electronic products; Wholesale of electronic components; Retail of computer software, hardware, and auxiliary equipment; Technical services, development, consultation, exchange, transfer, and promotion; Sales of optoelectronic devices; Sales of power electronic components; Software sales; Retail of hardware products; Wholesale of hardware products; Internet sales (excluding sales of goods that require licensing); Sales of electronic components and electromechanical component equipment; Sales of electronic specialized materials; Sales of electronic specialized equipment; Domestic trade agency; Sales of electronic vacuum devices; Research and development of electronic specialized materials; Sales of artificial intelligence hardware; Wholesale of computer software, hardware, and auxiliary equipment; Software outsourcing services; Daily product repair; Trade brokerage; Software development; Sales of instruments and meters; Repair of instruments and meters; Sales of hygiene products and disposable medical supplies