Support & High quality controlWe supply detailed drawings and offer every time required.Our merchandise are used in numerous fields. It has established stable cooperation with a lot of effectively identified universities and institutes in china this sort of as, Zhejiang University, Jilin University, Specialized committee of national chain drive common, Institute of nationwide chain drive, Zhejiang application engineering material institute, Huhan materials safety institute and it cooperated to located China Very first Car chain institute with Nationwide chain travel institute.