... structure,easy to maintain and repair Sealed hot & cold water tanksAdjust water quantity and temperature freely Filter replacement ... in my back. First it kept itat bay and now I notice it completely went away. My massage therapist ... coolerGR320MC,GR320MC-BWall amounted POU water boilerGA406A,GA406ZStanding hot & cold water dispenserGR320A(RO),GR320B,GR320PS(bottle), GR320PS(bottless)GR320W- ...