Technology development, sales (excluding electronic publications), installation and maintenance in the field of computer software and electronic products; computer system services; sales, repair, transformation: machine tools, machine tool accessories, machine tool systems, electromechanical equipment, general machinery, valves, pipe fittings, grinding tools, CNC systems; handling and installation of electromechanical equipment; machine tool customization; general Equipment sales, technology development, technical consulting and maintenance; manufacturing, processing, and sales of: ordinary machinery and accessories, general machinery and accessories, auto parts (excluding engines), motorcycle accessories (excluding engines); designing and publishing various types of advertisements** [Projects subject to approval according to law can only be operated after approval by relevant departments]. .