Generally speaking, a machine stably produces 3 sizes of diaper.
When a machine is designed to produce 4 sizes of diaper, it will be unstable.
In Asia, a machine normally produces M, L, XL size of diaper.
In Europe, a machine normally produce L, XL, XXL size of diaper.
There is no S size because pull-up pant baby diaper is more suitable for babies who are learning to walk, and they are bigger than newborn babies.
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