The number "6" indicates that the material of the plastic is PS. More common in bowls of instant noodles, fast food boxes. It is also heat-resistant and cold-resistant, but it cannot be placed in a microwave oven to prevent the release of chemicals due to excessive temperature. And can not be used to contain strong acid (such as orange juice), strong alkaline substances, because it will break down the polystyrene that is not good for the human body, it is easy to cause cancer. Therefore, you should try to avoid using hot food boxes to pack hot food.

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