Machining of mechanical parts and components; sales of mechanical parts and components; spring manufacturing; spring sales; manufacturing of automotive parts and accessories; retail of automotive parts; manufacturing of pumps and vacuum equipment; sales of pumps and vacuum equipment; manufacturing of construction machinery; sales of construction machinery; ferrous metal casting; sales of casting machinery; wholesale of hardware products; sales of chemical products (excluding licensed chemicals); licensed items: import and export of goods; import and export of technology.