Food: Use liquid nitrogen as a neutral element in packages and cans of oils, canned goods, juices and other snacks, to remove oxygen in them so as not to cause oxidation and spoilage.
Welding: In order to eliminate oxygen in welding, important parts of the car such as axles and radiators, etc., because the presence of oxygen in the air causes welding metals to become black and weaken the parts, other uses such as cable making, ice cream making, pharmacy, cattle breeding, cutting Work – Steelmaking – Making resins and hundreds of other products.