1.ISO,QS,SGS,CE certificate 2 ... alkali, oil, high temperature, poison and pollution etc.1.stable running, good quality, free maintence.2.small ... vibrating and long lifespan.3.the flexibility of sealing menthods.4.several seals achieve dustproof and ... reducer 20. CouplerBelt Conveyor Applied Range This kind of belt conveyor is widely used in metallurgy, mine, coal, building materials, chemicals, ...