1. Industries can be classified into Agro Based Industries and Mineral Based Industries on the basis of raw material. 2. Agro Based Industries have their base in agricultural raw materials. These include cotton, woollen, jute, silk, textile, rubber, sugar, tea, coffee, edible oil etc. 3. Mineral Based Industries have their base in minerals and metals as raw materials. These include iron and steel, cement, aluminium, machine tools, petrochemicals etc.