R&D, design, production and sales, technical services and technology transfer of intelligent power supply cabinets and power control systems, intelligent measurement and control equipment, high-voltage and low-voltage power equipment, low-voltage electrical products and instrumentation; electrical equipment complete sets and installation services; sales of power equipment and accessories, wires and cables, chemical materials (excluding hazardous chemicals) and building materials, new energy and new materials; commodity import and export business (except for national restrictions and special licenses).