The art of E.I. Tanning depends on the process adopted according to the quality of water, raw materials used, temperature and climatic conditions of the region and hence our association will ensure its members, the process details, definite make of raw materials that are to be used in order to maintain the inherent characteristic of E.I. Leather namely call it a feel for leather, a smell for nature a specific fragrance, its wonderful crackling sound, its pleasant color and the light that lends the natural leather a warm pale yellow tone to beige shade which is very unique quality of Trichy E.I. Leather. It was registered as one of the Geographical Indication from Tamil Nadu on 28 Mar 2008.