Natural gas is a general term for a hydrocarbon-based mixed gas that exists in underground rock reservoirs. Including oil field gas, gas field gas, coalbed methane, mud volcanic gas and bio-generated gas. The main component is methane, usually 85-95%; followed by ethane, propane, butane, etc.
The natural gas industry is a premium fuel and chemical raw material. China's recoverable resources were 1.57 times that of the previous round, an increase of 57% to 22 trillion cubic meters. Due to the increasing demand for clean energy by environmental protection and the impact of high oil prices, the natural gas industry has become a new economic growth point.