The two are not the same as natural gas, more than and 90 per cent of all carbon 1 methane, methane content in coal gas natural gas is not so high
But now is the promotion of natural gas phase, the vast majority of pipeline gas are natural gas, more than 10 years ago, then it is mostly liquefied petroleum gas, water, gas and gas (carbon monoxide and hydrogen) may be 30 years ago
But people used to call all the domestic gas gas, including natural gas and liquefied petroleum gas.
Do not say, are possible.Pipeline is just a means of transport, the true meaning of the gas is carbon monoxide and hydrogen,
