No matter what kind of cup it is, if the quality is not good, it will endanger the safety of the user during use, so don't make up your mind just because the stainless steel thermos looks good. So how can you know that the quality of the thermos is good? Yaxing manufacturers will talk about the four rules for choosing a thermos:

1. Hygiene: It means that the raw materials of the thermos must be healthy and hygienic. The materials of the vacuum flask are mainly stainless steel and plastic. The plastic cover and rubber ring must be made of environmentally friendly materials that are harmless to the human body or do not pollute the environment. BPA harmful chemicals must never be added. The plastic used for the lid is PP food-grade plastic. The simple measurement method is to smell it with your nose. There should be no odor or bad smell.

2. Heat preservation: According to the light industry standard (QB/T2332), the heat preservation performance standard of stainless steel vacuum flasks (pots) is: at room temperature of 20 degrees, fill the cup with boiling water above 95 degrees, cover the lid for 6 hours, the water temperature of the cup with a capacity of less than 400ML is not less than 42 degrees, and the water temperature of the cup with a capacity of more than 400ML is not less than 54 degrees.

3. Sealing: This is a point that people consider more when buying thermos cups. Excellent sealing performance is the key to buying thermos cups. Excellent thermos cups must be leak-proof.

4. Reliability: It is necessary to understand whether the relevant products are from companies that specialize in manufacturing thermos cups. When there are quality problems with the products, whether after-sales service or exchange can be obtained in time, etc. It is wise to buy products from companies that can protect consumer rights.

Therefore, when choosing, you can use this method to perform some simple tests, so that you can know whether the quality of the cups we are using is good or bad.