We examine every single piece of bearing by ourselves prior to supply.In this way, our products have continued to gain marketplace acceptance and customers satisfaction more than the past few a long time. It has proven stable cooperation with several effectively identified universities and institutes in china this kind of as, Zhejiang University, Jilin University, Technological committee of nationwide chain generate standard, Institute of nationwide chain drive, Zhejiang application engineering materials institute, Huhan material defense institute and it cooperated to found China First Automobile chain institute with National chain drive institute.