... These parts are used in the wheel chair.Produced by powder metallurgy process. ... Suspension System Co., Ltd., Zhejiang Qianjiang Motorcycles Group, and Zhongjian Tools Manufacture Co., Ltd. , AL-KO, ... mesh belts sintering furnaces, steam treatment furnace and a complete set of testing equipment, 20 ... sets of tooling machines and various CNC machines. Kingbell/Yongtai has the ...