We examine each and every piece of bearing by ourselves before shipping and delivery.Good quality and credit score are the bases that make a corporation alive. It has established secure cooperation with a lot of nicely identified universities and institutes in china this kind of as, Zhejiang University, Jilin University, Complex committee of national chain generate regular, Institute of nationwide chain drive, Zhejiang application engineering substance institute, Huhan materials protection institute and it cooperated to located China First Automobile chain institute with Nationwide chain drive institute.