SJSZ series are conical twin-screw extruder with rapid speed and high efficient. The screws and barrels are made of special performance alloy steel and optimizing design, for high efficient mixing, plastic homogenization, high output, long service life. The unit stepless speed and whole lines synchronous stepless; speed regulation can be obtained. The whole lines have several control panel, for convenient operation, 3-dimensions of calibration device can be adjusted according to controlling demand. The reasonable design of control system for cutting and haul-off unit matches to cutting stable and safe, which prevent the accident. It's safe and reliable.