If this Toilet Bowl looks familiar, well, it should, because it's a similar model to the ones they are using in newer BTO flats. And it's no wonder, because it seems pretty water-saving to us. It works like this : the Toilet Bowl comes with a built-in basin that sits above the cistern for washing hands. The water that is used to wash your hands is then saved to use for the next time you flush your toilet.
And this Toilet bowl ECO188 is available at biglobang.com