The natural gas is more regarded because it is in low exhaust gas, in low price and reasonable resource configuration and the CNG(Compressed Natural Gas) vehicles become more popular.

• 天然气的低排放、低燃料费用和合理的燃料资源配置,使其作为汽车发动机燃料在国际上日益受到重视,天然气汽车成为清洁汽车的发展趋势之一。