by ep | Apr 13, 2023 | Product Catalog
Product Description Product DescriptionHeat treatmentHarden teeth, tempering, quechingSurface treatmentzinc plated, blacken, phopharization, carborizedProcessForging( casting)—lathe- teeth shaping—finishing—oil washing—Packing ,made by CNC...
by ep | Sep 13, 2020 | Product Catalog
It has established stable cooperation with many well known universities and institutes in china such as, Zhejiang University, Jilin University, Technical committee of national chain drive standard, Institute of national We distribute many other items that are not...
