Industrial gases refer to oxygen, nitrogen, argon, neon, helium, krypton, xenon, hydrogen, carbon dioxide, acetylene, natural gas, etc. Because these gases have inherent physical and chemical characteristics, they play a pivotal role in the national economy, and the speed of promotion and application is very fast, almost penetrating into all walks of life.

At room temperature and pressure, hydrogen is a colorless, tasteless, odorless, non-toxic, highly flammable and insoluble in water gas.

Isobutane, also known as 2-methylpropane, is an organic compound with chemical formula C4H10 and is a colorless flammable gas at room temperature and pressure. Slightly soluble in water, soluble in ethanol, ether, etc., and air to form explosive mixture, mainly exists in natural gas, refinery gas and cracking gas, obtained by physical separation, mainly used for isobutylene through alkylation to isooctane, as a gasoline octane improver, can also be used as a refrigerant.