1.High quality, high efficient 2.more professional 3.reliable performance screw ... °C.Conveyor is not suitable for conveying perishable, viscous, easy caking materials.Can deliver powder, granular, small pieces of ... structure, small cross-sectional size and low cost;.2, easy to load or unload .3, The operation is simple ... of materials from the outside world, sealing well high quality screw conveyor