... pressure: 0 - 0.8Mpa (adjustable) Principles:It uses carbon molecular sieve as sorbent, produces nitrogen by making use of ... the PSA principle. Under certain pressure, carbon molecular sieve has different oxygen/nitrogen adsorption capacity, i ... transport, etc. Used in fields such as chemical ,urethane elastic fiber, rubber, plastic, tyre, polyurethane, biological technology, intermediate, etc ...