The production line adopts the SHJ parallel twin-screw extruder, is suitable for PET bottle flakes granulation, the whole production line include SHJ series extruder, die, hydraulic network device, cooling water tank, air drying machine, cutting machine, bin, also applies to PP PE PA ABS TPE granulation, etc. Screw extrusion machine machine with vacuum exhaust system, but the moisture out of the material, the hydraulic device to replace the network can be effective filtering materials the impurities.