Automobile motorcycles Gears, pinion,sprocket, helical gears,valve, pistion,rod guide,rotors, ... joint venture---Ningbo Yongtai Powder Metallurgy Co., Ltd. in Feb. 2006. Kingbell/Yongtai specializes in manufacturing various of powder metallurgy components ... on. Tianji Tian De Suspension System Co., Ltd., Zhejiang Qianjiang Motorcycles Group, and Zhongjian Tools Manufacture Co., Ltd. , AL-KO, are ...