SJSZ series conical twin screw extruders are used to produce various thermoplastics especially PVC to 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 The machines are designed with overloading protection, trouble alarm, emergency off; screwsare cooled by oil, barrels are cooled by fans, with vacuum vetilation and measuring feeder.