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How long does the straw last in the liquid before it loses its hardness?

How long does the straw last in the liquid before it loses its hardness?
Update Time:2019-08-02

Answer:
Paper straws are generally kept in water below 60 degrees Celsius for 6 hours without spreading. The wheat straw can be placed in water at 100 degrees Celsius for about 8 hours without softening.