Belt: rubber, nylon, steel wire, 3~6 layers. Roller:steel rollers, 5 times painting. Speical need:as demand ISO,CE,GB,ZB About us We are manufacturer, established in 2003, with about 10 years' experince in belt conveyors, conveyor idler rollers, conveyor rollers, roller support design and supply. All of our products have been used in more than 20 countries Through CNBM in China. And all of our ...