The illustration demonstrates the stages in the production of goods from leather.
Overall, it is a 11 stage, man-made, linear process. It begins with skin from animals as raw materials and finally results in a variety of leather products being sold.
First of all, animal skin is hung until it is completely dried before being transported to a factory by a truck. In the factory, it is washed by a liquid combination of water and lime. After that, the skin is soaked in a large body of lime water. Then, after the skin is flattened, the soaking process continues inside the tannin which consists of water and vegetable matter.
Following that, after being polished in order to be totally clear and shine, the leather is delivered to another factory so that it can be transformed into leather products, such as shoes, bags and toys which will be sold to customers.