Manufacturing of distribution switch control equipment; sales of distribution switch control equipment; manufacturing of electronic components and electromechanical components; sales of electronic components and electromechanical components; manufacturing of mechanical and electrical equipment; sales of mechanical and electrical equipment; manufacturing of instruments; sales of instruments; manufacturing of lighting fixtures; sales of lighting fixtures; sales of fire protection equipment; manufacturing of security equipment; security equipment Sales; manufacturing of auto parts and accessories; wholesale of auto parts; retail of auto parts; manufacturing of motorcycle parts; wholesale of motorcycles and parts; retail of motorcycles and parts; manufacturing of hardware products; wholesale of hardware products; retail of hardware products; manufacturing of plastic products; sales of plastic products; mold manufacturing; mold sales; technology import and export; import and export of goods.