Belt:Canvus, nylon,steel wire,heat-proof Rollers:Steel rollers Special:as buyer' ... devices: High temperature, cold weather, exploration-resistant, fire-resistant, acid-resistant, alkali-resistant ,waterproof and alike condition should take some special devices. ... the belt work smoothly.6. unloading device (Fixed plow unloading device and electronic unloading vehicle)7. Cleaning device (Elastic ...