This kind of product is basically invisible, because the product you get is basically a single piece or a small package, and the defective rate is not very high.

If you don't mind, it's OK to send me.

I need it, too. 

It is suggested that you can go to large factories to study. Rules and regulations are very flexible, which can not be understood only by reading words. They should be integrated into the actual operation.

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.

I've seen several companies, not the only one, but I don't know how the operation and maintenance effect is.