This picture illustrates the process of the animal skin to be final products such as shoes, bags, and balls. This is divided into three phases, those are pre-industrial, industrial, and advanced-industrial phases. The whole process consists of eleven steps, it begins from drying to becoming final goods which are already used.
As for pre-industrial phase, it starts when the animal skin are being dried to reduce its water or moisture level. After drying, it will be distributed to any factory to be a material of bags, shoes, and other final goods.
In the industrial phase, the first step must do is washing the skin by water and lime to decrease more residues. After that, that wide sheet wants to be soaked into lime liquid to kill microorganisms for a long time before flattening it. In flattening process, the skin becomes thinner and wider. After the process, manufacturers soak the sheet again into Tannin that consists of water and vegetable matter for some purposes. The next step is polishing the skin which aims to get out its fur and makes it smoother then the sheet will be distributed to any advanced factory.
In the advanced-industrial one, the skin will be processed with other materials to be more final goods, those are shoes, bags, and other advanced goods then they are already consumed by consumers.