... , silent, anion, multifunctional, Generate ozone, food, water, air sterilization Purify the water and air Health & beauty care Wipe off poisonous ... different usage requirements(such as wash clothes,vegetable and purified water etc), more humanistic CE standard prevent back flow device ... including:1 x Ozone Generator Set 220V Negative Ion Ozone Generator Air Water Sterilizer air purifier [GL15]