... noise,smooth running 1. Why you can choose Qi Zheng Machine?a.with 8 years specializing in producing plastic pelletizer, plastic ... which can fulfill efficient self-cleaning,transmission, compounding,press-forming,etc. The screw is made of high tool steel 38CrMoALA or W6Mo5Cr4V2 ... -resistant and high wear-resistant functions Brazil colombia 180mm screw barrel pelletizer machine-plastic granulator