1, purple sand thermos. Purple sand thermos pot not only has the basic heat preservation function, but also can be used to make tea, which has the effect of health care and conditioning. The inner container of purple sand thermos is carefully developed. At the same time, the purple sand thermos has strong adaptability to cold and heat, and will not burst due to large temperature difference. In addition, the purple sand thermos bottle has the advantages of slow heat transfer and no hot hands.

2, stainless steel thermos. Stainless steel thermos pot is very convenient to use in daily life. But stainless steel thermos is not suitable for making tea. Tea leaves are soaked in a thermos for a long time, and substances such as tea polyphenols in tea leaves will be leached out in large quantities, so that the brewed tea will be bitter. In addition, the nutrients such as vitamin C contained in tea will be destroyed when the water temperature exceeds 80℃, and the health care function of tea itself will also be lost.

3. Glass thermos. Glass thermos is healthy to use, but it is not anti-falling. At the same time, the glass thermos is easy to clean and the safest to use. But the glass thermos is fragile, so it is not recommended to carry it with you.