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Antiscale rubber ring is an external device forms a wave shape, there are 4 internal drainage hole ring.Its principle is to we usually brush your teeth, such as tea, coffee cup pour on the lantern ring after use, to make the sundry and outflow water glass as the watermarks in the cup. So there is no need to often clean can also keep the glass clean. And antiscale thimble and reduce the bacteria in the air of dust into the cup.
The spirit meaning design studio