Why Do You Need to Listen to It With Your Ears When Buying A Vacuum Flask?

When we participated in the exhibition, we saw that many people like to put the mouth of the cup close to their ears when choosing a stainless steel vacuum flask, listen to it to confirm whether this water cup is insulated, but asked a lot of people what they are listening to. In fact, many people also can’t make it clear, share it with you today.

It is reasonable to use the ear to determine the insulation performance of the thermos cup, but it cannot be the only way to judge. If the stainless steel water cup wants to have the effect of heat preservation, it must be double-layer vacuumed. If the vacuum effect is better, the heat preservation effect is better. At the same time, in order to improve the stability of heat preservation and the market, we will also plate copper coating on the inner layer.

In the vacuum state, the sound is non-conducting, that is to say, the ear is close to the mouth of the cup, and some external sound must enter the inside of the cup. Because the vacuum layer is not conductive, the sound reflectivity will be high, so when the sound is heard the louder the "buzzing" sound, the better the insulation effect.

Dongguan Zhanyi Commodity Technology Co., Ltd. has advanced stainless steel water cups, stainless steel daily necessities production equipment, and advanced production technology and management experience. At present, we have passed the ISO9001 international quality system certification, passed the Wal-Mart, Starbucks, BMW and other Fortune 500 companies certification, and passed the BSCI certification. We can produce single-layer stainless steel water cups, double-layer stainless steel water cups, stainless steel wine utensils, stainless steel tableware, etc. Customers from all over the world are welcome to visit our factory for inspection, and also welcome to place orders for cooperation. To understand us, please visit http://www.umbottle.com