Electronic special material manufacturing; Distribution switch control equipment manufacturing; Transformer, rectifier and inductor manufacturing; Auto parts and accessories manufacturing; Transmission, distribution and control equipment manufacturing; Motor manufacturing; Electric motor manufacturing; Tram manufacturing; Battery manufacturing; Battery spare parts production; Motorcycle spare parts manufacturing; Plastic products manufacturing; Power electronic component manufacturing; Electronic component manufacturing; Electronic special equipment manufacturing; Gear and gear reduction, gearbox manufacturing; Electronic product sales; Electronic special materials sales; Electronic component retail; Electronic special equipment sales; Electronic components and electromechanical components equipment sales; Battery sales; Intelligent transmission and distribution and Control equipment sales