... 80/172,90/184 92/188.etcDesigning Screw structure and compressionratio can be designed accordingto different products &different mixtrues ... Standard SpecificationsISO9001Advantages1.Long time Nitriding Technology 2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy3. we uses special ... PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE,EVA,PP,PVC,PMMA,POM,PAST,PET,PBTNitride Depth0.5mm-0.8mmTechnology1) ...