Kids Shoes import request France

In fact I am looking for a shoe factory with good values, reactive and sustainable to create and produce my first sneaker. I am a French mother mother living in paris and after searching for the perfect shoes for my children in vain, (and after dealing with a foot issues when I was younger) I decided to create my own brand of kid’s shoes. My idea is to create shoes which respect the growing foot of little kids and allow them to move and get stronger feet but still have nice looking shoes. I couldn’t find that on the market. Shoes are either good for their feet either nice looking, not both. I started working with one factory in Portugal but I am looking for other manufacturers to compare.