1. Liquor contains high alcohol and other chemicals. If liquor is rancid for various reasons and produces acidic substances, it will react with the inner wall of cans. This will corrode the water tank and cause the liquid medicine to leak.
2. Liquor is different from other beverages, and its aromatic substances are still changing after brewing and filling. The long shelf life increases the possibility of these reactions.
3. The variety and quality of liquor can be observed from the appearance. The quality of most liquor requires crystal clear, but the quality is not high when it is turbid. Also, some maotai-flavor liquors produced in Guizhou are yellowish in color and slightly turbid, which is a sign of normal quality.
4. The tank wall is very thin, so it is best to use liquid containing gas, such as coke, soda, beer, etc. As soon as the gas expands, it will increase the strength of the tank wall and facilitate transportation and storage.
5. Another controversial point is: "Ordinary cans have a capacity of 250-300ML and can be used once. Few people have such a large capacity for liquor. If they can't drink it all at once and can't cover it, the alcohol will evaporate and the white wine will not taste good. Therefore, liquor is packed in glass bottles and ceramic cans with lids, and it will become moist and mellow over time. Although there is no scientific basis, this is the best explanation for liquor packaging without cans.