Butane is the main component of natural gas. Butane is a combustible gas with stable properties and full combustion, and generally does not burn too hard. At present, the price of natural gas used by residents is generally lower than three yuan per cubic meter, which is indeed the lowest price compared with other fuels.

Gas tanks are generally canned, and coal is put into the tanks after being processed and vaporized. The gas price is about 180 yuan per barrel, about 30kg.