Nongfu Spring sells 1.5 liters of water for three pieces and 500 ml of water for two pieces. Why?

1. Because more people buy 500ml water, things are scarce. Generally, many people who buy mineral water are people who are in a hurry, are in a business trip, are inconvenient to drink water, or are in urgent need of cooling down when the weather is hot. It is inconvenient to drink 1.5 liter of water or hold it in your hand. Although it looks cheaper than 500ml of water, there is no need to spend more money. 2. For mineral water, the production cost of 1.5 liter and 500ml water are not much different, and the price is not much different from 500ml.