Electric steelmaking: Decarburization, heating with combustion supported by oxygen, foam molten slag, metallurgical controland subsequent heating.

Effluent treatment: Oxygen enriched aeration of activated sludge, pool oxygenation and ozone sterilization.

Glass fusion: combustion and fusion supported by oxygen, incision, to increase glass output and extend furnace life Pulp bleaching and paper making: Convert chlorine bleaching into oxygen enriched bleaching, provide oxygen at low cost,dispose of sewage.

Non-ferrous metal smelting: Oxygen enriched is needed when smelting copper, zinc, nickel and lead, etc; copious cooling is being replaced by PSA.

Outdoors incision: Oxygen enrichment is needed to incise steel pipe and plate outdoors, which is covered by mobile or small-size oxygen generator.

Oxygen for petrochemical and chemical engineering: Air is replaced by oxygen enrichment for oxidation reaction in petroleum and chemical engineering to speed up reaction and increase product output.

Ore treatment: Used for production of gold, etc. to improve extraction of precious metal.

Aquaculture: The volume of dissolved oxygen in water can be increased by aeration with oxygen enrichment to increase fish output; supply oxygen for live fish; intensive fish farming.

Fermentation: Air is replaced by oxygen enrichment to supply oxygen for aerobic fermentation to improve fficiency largely.