What should I pay attention to when I use the newly bought thermos for the first time?

Attention should be paid to the first use of the new thermos:

Wash it first, preferably pour some vinegar, then fill a pot of hot water and let it stand for a few hours before pouring it.

Before using the new thermos bottle, pour it into the new thermos bottle, and the new thermos bottle will maintain a certain temperature force.

Rinse with warm salt water first, then rinse with warm water 1 2 times. When you use it for the first time, wait until the boiling water is a little cooler before injecting it into the bottle to avoid scalding the dark lines. Be careful not to mix oil when filling boiling water, otherwise the bottle liner will easily break. Soaking the water plug with tea can remove the odor. That's all.