... ,5g ozone machine mainly use for hotel, factory,medical industry and so on 2, portable one 3, CE and ROHS ... approved 5g portable ozone machine for hotel with CEFunction :1, the Ozone ... , long-life design4 air-source and oxygen source one machine, the customer can use on demand Useful: 1, ... , sterile room Welcome your inquiries! 5g portable ozone machine for hotel with CE