1, stainless steel. Stainless steel is a very common kettle liner material in the market. Stainless steel is not easy to rust, easy to clean and extremely durable, which is a very cost-effective choice. When purchasing stainless steel kettles, you should pay attention to purchasing food-grade stainless steel kettles.

2. glass. Many health pots on the market are made of glass. This kind of health pot has the function of boiling water, with the advantage of transparent appearance, which can better grasp the depth of water when receiving water, and it is also convenient for us to observe the state of water in the pot.

3. ceramics. The advantages and disadvantages of ceramic kettle are very obvious. Its advantages are beautiful appearance, health, non-toxicity and environmental protection. But this kind of kettle breaks easily. If we don't have pets such as cats and dogs or lively friends at home, ceramic kettles will be a good choice.