Oxygen enrichment molecular sieve series are special used in PSA/VPSA system. They have good N2/O2 selectivity, good crush strength and low loss on attrition, which is cost-effective for concentrating oxygen from air. They are widely used in industrial/Medical oxygen concentrator in ozone production filed, Aquaculture field for fish farming,Waste water treatment field, medical oxygen market. etc. Their concentating purity up to 93%+-3%, having good reputation in market.