Because everyone's physical condition is different, they need to adapt to sanitary napkins made of different materials and sanitary napkins with different effects, so there are so many kinds. If there is no market, it will certainly be impossible to produce and survive. Since there are so many, it has proved to be useful.

Normally, there must be many kinds. After all, there are so many people in the world, and everyone's physiological needs are different.

Only when there are many kinds can we meet the needs of different people. It can also expand the whole market.