1,20g ozone machine mainly use for hotel, factory,medical industry and so on 2, portable one 3, CE and ROHS approved ... and oxygen source one machine, the customer can use on demand Useful: 1, the laboratory: materials, oxidation, fading, and the effect of ... of water, production workshop, sterile room, equipment, tools and so on.5, the pharmaceutical industry: production, such as water, central air ...