Compressed Natural Gas (Compressed Natural Gas, hereinafter referred to as CNG) is Natural Gas that is pressured and stored in containers in gaseous. Compressed Natural Gas can be used in addition to the field of Natural Gas and Natural Gas oil field outside, still can make artificial biological methane (main component is methane)
The components of Compressed natural gas and pipeline natural gas is same, the main composition is methane (CH4) can be used as the fuel CNG vehicle use. LNG (Liquefied Natural Gas) can be used to making CNG, these CNG vehicles for fuel called NGV (Natural Gas Vehicle). LPG (Liquefied Petroleum Gas, LPG) often easy to confuse with the LNG, in fact they have obvious difference. The main components of LPG is propane (more than 95%), and a small amount of butane, LPG store in tanks containers in liquid in appropriate pressure, and be used as fuel and civil motor vehicle fuel.