Why does the lid of Coca-Cola can change?

What is completely pulled out is unique to China, and foreign countries, including Hongkong, are trapped in it.

In fact, there is nothing unsanitary. Just wipe it before drinking. Many people don't use straws when drinking, and their mouths touch the edge of the bottle, which is actually very unsanitary! ! In fact, many people will say, it doesn't matter, I wiped it;

Well, since the wiped bottle rim is acceptable for import, why can't it be acceptable if it sinks in?

If you say that drinking through a straw is unsanitary, I can tell you that the bottle cap can't touch soda. Also, just wipe it clean before drinking! ! ! People all over the world drink this way.