Manufacturing of electronic components; retail of electronic components; wholesale of electronic components; manufacturing of special electronic materials; sales of special electronic materials; manufacturing of electrical accessories; sales of electrical accessories; manufacturing of motorcycle parts; manufacturing of automobile parts and accessories; retail of automobile parts; wholesale of automobile parts; retail of motorcycles and spare parts; wholesale of motorcycles and spare parts; manufacturing of power transmission, distribution and control equipment; sales of intelligent power transmission, distribution and control equipment; import and export of goods; import and export of technology.