... the designing and development of many years, the plastics single screw extruders of the brand RUN HUAhave formed the The ... scopes of screw diameter are from 30mm to 250mm, the L ... the different raw material, such as PE,PP,PVC,PS,PA etc. They can be used to ... extruder, the key parts, suchas the barrel,the screw,and the reducer, are designed and manufactured by RUNHUA ...