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We often have no straws when drinking Cans , however it`s very dirty on the top of the cans. Clean cans combine the straw with the cans.The straw will open with the pull-tab.It`s just like a Flagon of the cans. When you drink , your mouth will not touch the top of the cans. Ir`s more cleaner When you drink the cans.
Yang Yuxiao, Mou Dan, Li Minghui, Zhen zhiliang