Leather is a by-product of meat industry.
The main sources of raw material for the leather industry world-wide are cattle, sheep and goats, which are reared specifically for the production of meat, wool and dairy products. Typically, the value of cattle hides, sheep and goat skins represents in the region of 5-15% of the market value of an animal.
The primitive men even before 7000-10000 B.C years ago used leather for his daily use, by drying raw skin and hide in the sun and softened by applying fat. All over world the making leather become a fashion and in demand. The history is full stories mentioning leather as fashion, industrial use and other useful manner.
The leather industry utilises hides and skins which would, if the industry did not exist to process them, create an enormous waste disposal problem with the attendant health hazards.
Leather is a renewable natural resource - if leather was not produced, it would have to be replaced by synthetic materials derived from non-renewable resources.
The leather would decompose itself, if not processed. It is processed from tree barks (Vegetable), mineral salts and oils and chemicals (Chrome tanning), by lubricating, softening and coating with allowable dyes and colours for end use. Tanning is a process that purifies from all sorts of dirt, fat, etc. and keep the stencil of the leather intact for a long period by displaces water from the hide's protein fibers and cements these fibers together.
Leather is used in a wide range of products from children's shoes, where it is most important for foot health to oil seals used in aircraft. Leather makes a contribution to the quality of everyday life and has done so for centuries. Virtually everyone wears or uses one or more leather products on a regular basis.
The primary sources of raw material for the tanning industry are hides and skins from animals that have been accepted as fit for processing for human consumption at approved slaughterhouses, where the handling and treatment of cattle fully meets the appropriate animal welfare and hygiene requirements.
In addition to welfare and hygiene standards, the tanning industry recognises that the quality of the hides and skins they receive generally reflects the health, welfare and husbandry conditions, which have applied during the life of the animal. The quality, efficiency and profitability of tanners' operational depend significally upon the quality and consistency of the raw materials that they source.