Why does Japan always adopt this higher cost packaging method?

Is it just for beauty?

Next, let's talk about the reason for this

First, Japan does not allow the use of non environmentally friendly plastic barrels, except biodegradable plastic barrels; But the cost of biodegradable plastic packaging is higher than that of iron drums.

Second, iron cans are easy to recycle. As we all know, Japan is a country with relatively scarce resources.

Third, the safety is more guaranteed, because lubricating oil is a dangerous chemical, once leaked, it will also damage the environment.