General items: technical services, technology development, technical advice, exchange, technology transfer, technology promotion; development of electrical switch control equipment; manufacture of electrical switch control equipment; distribution of electrical switch control equipment; sale of electrical equipment; manufacture of instrument instruments; manufacture of instrument instruments; sale of equipment for the sale of plastics; sale of plastics; sale of plastics; sale of non-ferrous equipment; licensing of non-ferrous metal sales, except for the sale of electrical equipment; sale of electrical equipment; sale of electrical equipment; sale of electronics and vacuum equipment; sale of hardware and vacuums; manufacture of hardware and equipment; sale of hardware products; retailing of hardware and plastics; sale of plastics; licensing of non-ferrous metal; sale of electrical equipment; sale of non-materials; and sale of electronics and electronics; sale of electrical equipment; sale of electronics; and sale of electrical equipment