"Natural gas, high pressure" is a non-toxic, colorless, odorless gas, primarily composed of methane and typically containing small amounts of ethane, propane, butane, hydrogen sulfide, carbon dioxide, nitrogen, and other components. Under standard conditions, the density of "natural gas, high pressure" is approximately 0.7174 kg/m³, with a net calorific value of 36.0 MJ/m³. High-pressure "natural gas, high pressure" extracted from oil and gas production is primarily supplied to large consumers such as power plants and industrial facilities.