What does the symbol on the bottom of the stainless steel water cup liner mean?

When you buy astainless steel water cup every day, you will notice that there is a shield-shaped icon on the bottom of the liner of the water cup. There will be a number 304 or 316 in the icon. What do this picture and number mean? Does the domestic quality inspection agency or international quality inspection require that these icons must be marked inside every stainless steel water cup?

First, explain the meaning of the shield icon 304 or 316. 304 means that the inner tank of the water cup is made of 304 stainless steel, and 316 means that the inner tank of the water cup is made of 316 stainless steel. 304 stainless steel and 316 stainless steel have been explained in detail in many previous articles. If you are still unclear, please read the previous articles on the website.

Secondly, regarding shield-shaped icons with numerical symbols, neither China nor any other country in the world requires them to be marked. The initial use of this compliance originated from the brand’s intention to create more buying points when entrusting the water cup factory to produce it. It is processed by stamping, so consumers do not have to completely believe that the water cup marked with the icon is indeed made of these materials just because it is marked as 304 or 316.

Some friends have paid attention to what we said before, saying that water cups stamped with symbols only indicate that the inner liner of the water cup is made of these materials. Why not say that the entire cup body is made of this material? As a member of a strict stainless steel water cup production factory, I explain to you seriously and responsibly based on professional ethics and a pragmatic attitude. Yes, if there is an icon stamped on the bottom of the stainless steel liner, please just believe that the other party only uses this material for the liner. Why do you say that?

A convenient and quick detection method was mentioned in the previous article. Let me talk about it again here. If you carry a Bluetooth headset with you, use the magnet on the Bluetooth headset to adsorb the cup body. If it cannot absorb, it means that the material used by the other party is The material should be consistent with the icon it carries. If it can be drawn, it means that the other party must not be using 304 stainless steel or 316 stainless steel.

Stainless steel thermos cups usually consist of a shell, an inner liner, and a cup bottom. The editor has been asked countless times by friends to identify whether the newly purchased water cups are "wrong goods." After testing by the editor, I found that most of the water cups are really "wrong goods." What's more, the bottom of the inner tank of the water cup is marked with 316. After testing, the editor found that except for the inner tank, which is 316, the rest of the entire cup body is actually made of 201. Therefore, the editor advises everyone not to buy a water cup based solely on the logo on the bottom of the water cup. It does not mean that a water cup without a stamped icon on the bottom is an unqualified water cup. The water cup factory where the editor works is a perennial export OEM, so tens of thousands of these Among the water glasses, those with number icons and those without number icons can be numbered from 50 to 50.

Here, the editor would like to state again to everyone that I have not discredited the entire water cup industry. After all, I am also one of them. The materials used by most water cup factories on the market are trustworthy. After all, there are still a majority of conscientious companies, and only some A small number of unscrupulous water bottle factories do this. The editor cannot use the market retail price of water cups to judge the quality of water cups for everyone. I can only teach you some simple testing methods through sharing articles one by one.