... of the PSA principle. Under certain pressure, carbon molecular sieve has different oxygen/nitrogen adsorption capacity, i.e. ... , nitrogenizing, furnace washing and blowing ,etc. Used in fields such as metal heating treatment, powder metallurgy, ... agglomeration, anneal, deoxidization, storage of electronic products. Used in fields such as peak welding, circumfluence welding, crystal, piezoelectricity ...