Based in Changzhou, hub of the modern manufacturing industry, Changzhou Topwin Vehicle(China) Co Ltd (hereinafter referred to as Topwin) is a group dedicated to the R&D and production of complete electric tricycles, four-wheelers and spare parts of various kinds.Two fully owned factories, Changzhou Benyun Autoparts Co Ltd (CY) and Changzhou Toppower Drive Techniques Co Ltd (TP) respectively, are attached to Topwin.CY is devoted to the manufacturing of electric tricycles and spare parts like integrated rear axle and rim. Since its establishment in 2005, CYs quality products at competitive price has made himself the single axles of choice among high-end e-trike manufacturers home and abroad. The market share of CYs integrated axle for e-tricycles has reached up to 80% in China and its axles are also met with great favor outside of China like in Inida.While TP is dedicated to the R&D and production of motors and controllers of various types. Not only state-of-the-art equipments and scientific production techniques have been put in place, but also a solid team of 16 R&D experts and 5 senior engineers in this area have been engaged for the furtherance of TP to a higher level. The operation principle TP sticks to is "Professional, Teamwork and Make history". What TP always strives to achieve is more and more new quality products to meet the various needs of clients.The insight and cooperation from all sides of works is always welcome and we look forward to the mutual benefits of teaming up with all sincere parties concerned.