Hydrogen-oxygen is a mixed fuel gas of hydrogen and oxygen after electrolysis with soft water by hydrogen-oxygen machine. It can be produced only with soft water, or with cooling liquid (known as No.6 solvent in China) and a little electric energy. The main purpose of development is to replace acetylene gas and propane gas currently used.

Electrolyzed water is used to produce a completely mixed gas of hydrogen and oxygen, not pure gas. Burning from water to gas will reduce water. Hydrogen and oxygen are pure water, clean energy and alternative energy, without harmful carbon monoxide, carbon dioxide, radiation and nitrogen oxides. Water (H2O)->; Mixed gas of hydrogen and oxygen (H2, O2 gas)->; Combustion->; Water (H2O) (natural circulation structure).