... reproduction and leads to food spoilage and deterioration. As a kind of suffocating inert gas, N2 can suffocate ... adsorption effect on N2. Therefore, N2 can be used as a good gas for preserving foods and keeping foods fresh. ... agglomeration, anneal, deoxidization, storage of electronic products. Used in fields such as peak welding, circumfluence welding, crystal, piezoelectricity, electronic ...