CNG/NG (LPG) green genterator .the noise is little,pollution is low,order for the personage amount of environmental protection body specially *The substitute of the petrol generator ,under the equal condition,the use cost is only 1/4-1/2of the petrol fuel. more economic. *Economize the energy,choose newly in the 21st century . *Can adopt the gas of the family expenses directly ,easy use for the user.