Paper cup
One: It is best not to drink the first cup of water. First use hot water to boil it. After four or five minutes, pour off the water and let the harmful substances in the paper cup fully evaporate. Because phosphors and inks are very permeable, they can contaminate food.
Two: Disposable paper cups or instant noodle trays should not be heated in the microwave.
Three: Try not to install hot water in the paper cup, because some manufacturers on the paper cup will spray a thin layer of wax in order to prevent the water from penetrating. When it encounters more than 40 degrees of hot water, it will melt. Therefore, disposable cups are best used for cold drinks, not for hot water above 40 °C.

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