Vending Machine with Washing Bottle Function 5 stages filtration+uv+ozone card/bill/coin system Item: GRA-100A with automatic washing ... stainless steel waterproof frame, front door-open design, safe and sanitation, durable, easily install and maintain Advanced RO technology, adops ... ensure more best quality of the water Lamp-checked technology available, users can check any impurities in the water ...