Shanghai Leisheng Dynamics Technology Co., Ltd., Shanghai Chuanlin Precision Parts Co., Ltd., are registered companies in Shanghai, specialized in research and development, manufacturing and sales of precision parts and components, electric motors and light electric vehicles. Nantong Leisheng Special Motor Co., Ltd., Nantong Chuanlin Casting Technology Co., Ltd., located at Nantong, Jiangsu Province are large scale production bases of above Shanghai companies. Lorentz Engineering Inc. is a U.S. corporation specialized in mechanical and electric electronic design. All VIVANA light electric vehicles are designed and manufactured by joint effort of above companies.

In addition to electric motor and vehicle parts and components production, Shanghai Chuanlin and Nantong Chuanlin is also world class supplier of precision parts and components in the global market for many years. As an electric motor manufacture, Shanghai Chuanlin has been manufacturing top quality electric motors for famous U.S. as well as European electric bicycle companies for many years.

With a passion in new technology and innovative ideas, research team in Shanghai Chuanlin now is working on frontier of electric motors and electric vehicles. Well trained technicians and engineers, strict quality policy as certified TS16949, advanced equipments are basics for manufacturing success.

ISO9001:2000 Certification	TS16949 Certification
1400MT Buhler Die Casting machine	DMG DMC1035V
Electric Bicycle Assembly Line	Zeiss CMM