... the designing and development of many years, the plastics single screw extruders of the brand RUN HUAhave formed the The scopes ... on. The extruder series own a lot of advantages: high efficiency, saving energy ,and long life etc. Among the ... extruder, the key parts, suchas the barrel,the screw,and the reducer, are designed and manufactured by RUNHUA Co ... so as to make sure the first class quality.