Import and export of goods; manufacturing of power electronic components; sales of power electronic components; manufacturing of electronic components and electromechanical component equipment; sales of electronic components and electromechanical component equipment; sales of intelligent power distribution and control equipment; manufacturing of power distribution and control equipment; manufacturing of automotive parts and accessories; sales of new energy vehicle battery swap facilities; battery manufacturing; battery sales; manufacturing of railway locomotive and rolling stock parts; sales of railway locomotive and rolling stock parts; manufacturing of power facility equipment; sales of power facility equipment; labor services (excluding labor dispatch); manufacturing of specialized equipment for commerce, catering, and services; sales of specialized equipment for commerce, catering, and services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; sales of charging piles; sales of motor vehicle charging; centralized fast charging stations; operation of electric vehicle charging infrastructure; leasing of charging control equipment; sales of new energy vehicle electrical accessories. Permitted items: Installation, maintenance, and testing of power transmission, power supply, and power receiving facilities.