Sales of electrical equipment; Manufacturing of distribution switch control equipment; Wholesale of electronic components; Research and development of new material technology; Manufacturing of power transmission, distribution and control equipment; Sales of intelligent transmission and distribution and control equipment; Sales of electronic components and electromechanical component equipment; Manufacturing of electronic specialized materials; Sales of capacitors and their supporting equipment; Sales of electrical signal equipment and devices; Integrated circuit sales; Manufacturing of computer software, hardware, and peripheral equipment; Industrial control computer and system manufacturing; Wholesale of computer software, hardware, and auxiliary equipment; Sales of industrial control computers and systems; Retail of computer software, hardware, and auxiliary equipment; Computer and office equipment maintenance; Design and construction services for safety technology prevention systems; Sales of distribution switch control equipment; Research and development of distribution switch control equipment; Manufacturing of specialized electrical and mechanical equipment; Operation of electric vehicle charging infrastructure; Sales of charging stations; Battery manufacturing; Computer system services; Manufacturing of mechanical and electrical equipment; Manufacturing of IoT devices; General equipment repair; Special equipment repair; Electrical equipment repair; Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Rental of computers and communication equipment; Manufacturing of refrigeration and air conditioning equipment; Manufacturing of transformers, rectifiers, and inductors; Battery sales; Information technology consulting services; Engineering technical services (excluding planning management, survey, design, and supervision); Technical services, development, consultation, exchange, transfer, and promotion; Sales of refrigeration and air conditioning equipment; Industrial engineering design services; Foreign contracted projects; Import and export of goods; Technology import and export