The newly bought thermos cup needs to be boiled several times to remove impurities. The thermos cup is refined by advanced vacuumizing technology, with elegant appearance, seamless inner container, good sealing performance and good thermal insulation performance. You can put ice cubes or hot drinks.

The thermos cup has many layers, and its interlayer is generally vacuum to prevent heat conduction. Then silver plating can prevent thermal radiation. Some cups have corks to prevent heat conduction.

Brief introduction of other conditions of thermos cup.

When buying a thermos cup, pay attention to whether the plug and the cup body are properly matched. Whether screwing in and screwing out is free and whether there is water leakage. Fill a glass of water, turn it upside down for four or five minutes or shake it hard to verify whether it leaks.

Look at the thermal insulation performance, which is the main technical index of the thermos cup. Generally, you can't check according to the standard when you buy it, but you can check it by hand after filling it with hot water. After two minutes, the lower part of the non-thermos cup will heat up, while the lower part of the thermos cup is always cold.