... with ISO and CE certificate 30KW natural gas generator / biogas generator / gas power plant Genset working condition: ... ParametersEngine ModelHG4BHG6BHGN14HGN14TypeIn-line, four stroke,electronic-controlspark plug ignition,water-cooling,dry cylinder jacket,premix proper ... before combustionIn-line, four stroke,electronic-controlspark plug ignition,water-cooling,wet cylinder jacket,premix proper ...