Technical Services, Technical Development, Technical Consultation, Technical Exchange, Technology Transfer, and Technology Promotion; Import and Export of Goods, Import and Export of Technologies; Research and Development of Distribution Switch Control Equipment; Manufacturing of Distribution Switch Control Equipment, Manufacturing of New Energy Prime Movers; Machining of Mechanical Parts and Components; Sales of Electrical Attachments for New Energy Vehicles; Manufacturing of Mechanical and Electrical Equipment; Production of Battery Components, Sales of Battery Components; Manufacturing of Automotive Parts and Accessories; General Mechanical Equipment Installation Services, Repair of General Equipment, Repair of Electrical Equipment; Repair of Specialized Equipment; Sales of Electrical Equipment; Sales of Non-Ferrous Metal Alloys; Sales of Metal Chains and Other Metal Products; Manufacturing of Metal Chains and Other Metal Products. (Except for projects subject to approval by law, all business activities are carried out independently in accordance with the business license. )