... 2000 Summary 1 the LS type screw conveyor are devided to single drive and dual drive forms. 2 LS-type screw ... power, coal, machinery, light industry, food and the food industry. 3 spiral chute conveyor is suitable for conveying powder, granular, small ... 4 adaptable, easily installation and maintenance, long life. 5 small size, high speed, rapid and uniform conveyor. 6 ISO9001:2000certificate LS ...