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Sharing one can of beverage without any other containers is an extremely common scene in our daily life. But that could be very embarrassing if one who have cleanliness or worry about the problem of sanitation. This simple design could open another new mouth of the tin of drink by rotating the pull-tab to the opposite and operate as normal, which helps to reduce considerably the risk of disease and avoid embarrassment as well. Whats more, the position of the pull-tab manifests obviously which mouth the last people used.