General items of construction and decoration materials; sale of steel products for construction; construction of metal structures; sale of metal structures; sale of electronics; sale of machinery equipment; wholesale distribution of gold products; retailing of hardware products; manufacture of hardware and electronics components; sale of equipment for industrial automated control systems; construction of metal products; construction of doors and windows; manufacturing of doors and windows; construction of indoor wood windows; engineering and technical development; collection of intellectual control systems; sale of special equipment; sale of goods and services (other than services); sale of equipment for goods and equipment; sale of hardware and electronics components; import and export of metal products; export and import of goods; and licensing of exports and imports, except in accordance with the law