1 screw conveyor is equivalent ISO1050-75 2 carrying large ... widely 4 ISO9001:2000 Summary 1 the LS type screw conveyor are devided to single drive and dual drive forms ... of material, such as cement, coal, grain, chemical fertilizer, ash, sand, coke, etc, not transport perishable, Viscous, and ... 5 small size, high speed, rapid and uniform conveyor. 6 ISO9001:2000certificate LS type screw conveyor