... joint venture 3.the bearing is made of copper alloy PW001-4 MAIN FEATURES: 1,universal power window for 4-door2,suitable for ... Ltd,originally known as Zhongshan Xiaolan Nengtong Electronic Factory, is a modern high-tech enterprise integrating R&D, manufacturing and ... scientific production management with self technology advantage, has gathered a group of elites in project R&D, production management ...