1.PLC control system. 2.Ethylene,propylene,vinyl chloride, etc. 3.V type, sign type, symmetry type, bad type of class, ... . V Type Chemical and Special Gas applications Compressor VW-4.2/8-20Products Information: Using new generation PLC control system, remote control ... LPG carriers(boats); the outlet volume ranging from 0.2 m3 /min to 3.0 m3 /min; outlet pressure from 0.8Mpa ...