How to quickly clean the vacuum flask?

Time：2020-10-23 20:35:41

After long-term use, the surface of the inner wall of the cup will produce scale. After soaking in warm water and diluted vinegar for 30 minutes, it can be cleaned. Toothpaste and toothbrush can also clean the tea scale. Newly purchased thermos cup lid and cup body sterilization only need to be rinsed in boiling water, do not soak, otherwise the PP material will deform and shrink;