... control, manual or auto, synchronization 3, ISO Standard Configuration of Natural Gas Generator Set:Engine: Ruichang (China brand) 1,water cooling , ... mg/m3, Standard condition of natural gas volumes must be 101.3 kpa, 20 Optional of Natural Gas Generator Set:exhaust pipe,flexible ... oil tank and so on ... Afer-sale service of Natural Gas Generator Set:guarantee:12months or 1000hours (subject to which ...