HS chain is China transmission chain manufacturer, offer oilfield chain, engineering chain, mining metallurgy chain, automobile roller chain, cement and agricultural chain. Our large and medium sized conveyor chain can be used in lumber processing, sugar mill, drink, palm oil and wastewater treatment equipment. Our heavy duty transmission chain is made of high strength material, size of our steel roller chain can be order made in customer needs. We have over 5000 varieties of ISO, ANSI, DIN stee