... factory 2.best service,quality and price 3.low gas consumption engine 4.water cooling,4-stroke gen 5.CE&ISO9001 ... Product Description Standard Configuration of Natural Gas Generating Set: Engine: 1,water cooling , 4 stroke 2,ratiation with water tank & fan & safe ... display ,all in english languge,with perfect protection and control function.low water alarm,high gas temperature, low oil pressure and ...