The diagram illustrates the process whereby leather products are made.
Overall, the procedure follows a 12-step sequence, grouped into 4 main stages: delivering the animal skin to a recycling center, preparing it within the factory, treating it with chemical, and concluding with drying and waxing the product. The first and second stages entail transferring and preparing the product. Notably, the process is a time-consuming one, requiring more than one month. In addition, both human intervention and machine usage are involved.
The process begins when animal skins are transited from the farm and then sorted in terms of their size. Once sorted, the animal skins are trimmed by human intervention, salt is then added. Following this, the animal skins are cured for 30 days, after which it is soaked to about 12-24, allowing to easily delete hair.
The next stage the skins were treated chemically with two main sources: salt and acid, then it is tanned for 48 hours. After the chemical procedure, the animal skin coloured and softened with oil. Having taken on a colour and oil, the skins are then dried and waxed by human labour.