it main be used for gas engine, air conditioning power car, locomotive, railcar and other industry department systems like UPS Ningbo Jiangdong YoungKing International Trade Co.,Ltd. is founded in the year of 2008, Ningbo Jiangdong YoungKing Internationgal Trade Co.,Ltd. has become of the most promising trading copanies in China.We have three department.Auto parts department, Solar system ...