... manufacturer, established in 2003, with about 10 years' experince in belt conveyors, conveyor idler rollers, conveyor rollers, roller frame design and production. All of ... driving device.)3. Roller parts (Driving rollers and returning rollers)4. Idler rollers parts (Trough idler rollers, parallel idler rollers, adjusting core idler rollers, and impact idler ...