1. There is no tail under the blue seal of the regular factory, and there is no arc tear guide line near the tail. The fake product is made of poor material, so it is difficult to tear off the lid without leaving this tail, and the lid can only be reinstalled after unpacking.

2. Look at the top surface of the blue cover, that is, the surface where the water dispenser is inserted, and the round hole pokes out of the water. Behind the dead zone circular anti-counterfeiting label, there are many tiny concentric circles around the round hole. Look at this from the light side. The buttons here are not smooth. False is the smooth plane around the diversion hole.

3. Look at the edge of the blue cover. The blue seal is cylindrical, with Wahaha Chinese character trademark on the edge of the cylinder. If Chinese characters stand out, they are probably fake.

Extended data:

Precautions for drinking mineral water:

1, when drinking mineral water, it is advisable to use unheated, cold drink or lukewarm water instead of boiling.

2. Because mineral water generally contains more calcium and magnesium, it has a certain hardness. At room temperature, calcium and magnesium are in ionic state, which is easily absorbed by human body and plays a good role in supplementing calcium. If calcium and magnesium are easy to generate scale when boiling and precipitate with calcium carbonate, they will not only lose calcium and magnesium, but also cause sensory discomfort, so the best drinking method of mineral water is to drink at room temperature.

The hardness of mineral water is measured by its mineral content. Generally speaking, mineral water with mineral content less than 50 mg per liter is called ultra-low mineral content, and 50 ~ 500 mg is low mineral content. This mineral water has a soft taste and a certain sweetness.

Baidu encyclopedia-mineral water

Baidu encyclopedia-Wahaha