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Disposable cups in life we often use, but ignored its Koubei health, when we repeatedly taken by hands when the opening of the cup cup, with many bacteria, but we don't know, continue to use, the health of the business. We at the cup mouth design two arc-shaped notch, so we drink, can not take the wrong position, is not touching the unsanitary place.
Chong Qing university
District Shangpingba Chongqing, China