1. Low price: single-screw extruders are compact and inexpensive. Twin-screw extruders are more than twice as expensive as single-screw extruders.2. Simple recipe: single-screw extruders have a relatively simple process and recipe3. wide range of applications: single screw is suitable for melt extrusion of polymers, for extrusion processing of pellet feed, such as forming, film blowing machines, injection processing, etc., and for a wide range of applications of raw materials.4. Easy maintenance: In terms of maintenance, the single screw is simpler than the twin screw because the structure of the single screw is very simple and facilitates maintenance.5. Basic principle of conveying: The conveying of single-screw extruders depends on the sliding friction formed between the raw material and the barrel.