... proportional controller,with help of blowing system,recycle material Automatic Rotary PVC Air Blowing Injection Molding Machine EK8-12P1.EK8-12P SERIES ... so as to control mould-clamping pressure, injection pressure and feeding pressure.3 unique mechanical structure, which allows to ... .4 with the help of blowing system, the machine can have product lightweight, soft and own a polished looking in ...