General Projects: Sales of electrical equipment; Production of protective gear [branch operations]; Rental of machinery and equipment; Sales of metal materials; Sales of machinery and equipment; Retail sales of hardware products; Wholesale sales of hardware products; Sales of communication equipment; Sales of fire protection equipment; Domestic trade agency; Sales of protective gear; Sales of distribution switch control equipment; Sales of metal structures; Sales of metal wire and rope products and their products; Sales of specialized instruments and equipment for environmental monitoring; Sales of electrical power electronic components; Sales of mechanical and electrical equipment; Sales of electronic products; Sales of hydraulic power machinery and components; Sales of test equipment; Sales of security equipment; Sales of metal tools; Sales of power facilities and equipment; Technical services, technology development, technical consulting, technical exchange, technology transfer, technology promotion; Wind power technical services; Sales of generators and generator sets; Sales of power dynamometers; Sales of communication equipment; Repair of general equipment [branch operations]; Repair of specialized equipment [branch operations]; Maintenance of electronics and machinery (excluding special equipment)