SJ series single screw extruders are used to match kinds of downstrem to produce various thermoplastics especially PE PPto be pipes, profile, boards, sheet etc. Manufacturer of main components: Barrel & Screw: JINXING (Best Chinese brand) Motor: "BEIDE" -----SIEMENS(CHINA) company. Frequency converter: ABB Temperature controller: RKC(Japan) or OMRON Contactors: SIEMENS