Official business page of Conceria Stefania S.p.a., Castano Primo, Milano. LEATHER TANNING IS AN ART. A valued finished product is obtained thanks to properly selected high quality raw skins. The raw material, coming from all over the world, is carefully checked and is addressed to the most suitable operations in order to get the best quality results thanks to a teamwork. By handling the finished skins you will appreciate the quality of workings and the natural characteristics of leather. There are several articles and types of leather as well as countless colours that can be produced. All of them are always fashionable thanks to the creative cooperation with famous stylists. Moreover, a well-stocked warehouse allows us to meet the requests of customers from all over the world in short times.