For processing all kinds of different plastics, we offer you 11 types of screws.Type 1. General purpose screw, for processing ABS, PS, HDPE, LDPE, POM, AS, PP etc.Type 2. PC screw, for processing transparent PC.Type 3. PA screw, for processing PA(Nylon), like PA6, PA66 etc.Type 4. PMMA screw, used for making product with thick wall.Type 5. PET screw, for processing PET, like used for making PET preform.Type 6. PVC screw. For processing UPVC, PVC.Type 7. Thermosetting screw. For processing thermosetting plastic, like PF(nolic resin)Type 8. Elastomer screw, for processing TPR, TPU, TPEType 9. Mixing type screw, for processing plastic filled with pearl powderType 10. PTFE screw, special for processing PTFEType 11. BMC screw, special for processing BMC.