He main machine host includes the ac motor, torque limited coupling, gear box, oil lubricating system, feeding system, barrel & screw, heating system, vacuum pumping system, soft water circulating cooling system, machine bed etc. the auxiliary devices: the pelletizing system of our twin screw extruder contains the water bath, dry blower, pelletizer, vibrating system, product conveying system and the auto packing system etc.note: apart from the strand pelletizing system, we can also provide the water ring pelletizing system, the air cooling hot face pelletizing system, the eccentric water fog pelletizing system, and the underwater pelletzing system etc