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The ring can rotate, so that the ring can indicate the drinker's initials. For people to quickly distinguish their drinks, can effectively prevent bacterial cross infection, while eliminating the drinkers psychological sense of exclusion.
The red line and A to Z twenty-six English letter can help you quickly identify which one is my own. You can be red line to your initials, can also point to your love letter, to distinguish between you and them canned drinks.
Wei Shang Chunlei Shi Tianyu Li Jianfang Zhang