... China. We are the real Chinese manufacturer, with primary sources, we are not trade agent.Main features ... of ZW compressor: ZW-1.7/8-250 type natural gas booster compressor with compact structure, ... cooling system is vertical and 2 or 3 tage type, mainly consists of fuselage, crank, connecting rod, ... cylinder and cooler. The compressor is skid-mounted type with the main unit and electric motor fixed ...