The picture illustrates twelve stages of making leathers from animal skin to current condition.
The process begin with cutting animal leathers and to deliver it from farm to sorting area. Afterward, a sorting process is divided into 2 groups, which one is small leathers, next one is large leathers. Additionally, a human process is provided by trimming and adding salt to leathers. After these stages leathers should curing 30 days before soaking them with water. Next, hairs which occuring on surface of leathers should be removed with help of knife and human. Also, leathers should be dropped to converter for pickling and tanning stages of made by chemical compounds and a tanning process contains 48 hours. Therefore, leathers should be coloured and softened by colour and oil. Then, machines provide leathers to dry. Finally, people should to iron these leathers.
Overall, the picture shows 12 stages and leathers are made by these stages with machines’ and peoples’ power.
