Y80A 8L oxygen concentrator for glass making concentration 93+/-3% 4,000 hours Long time continue working. ... Y80A 8L oxygen concentrator, industrial helper for glass making,stable performance, high purity.Specification:Flow Rate:0-8LPower:480WSound ... and efficientLong time continue working, up to 4,000 hours a time.Import Molecular sieve Specifications subject to change without notice ...