Based on raw materials, industries are classified into five categories :
1. Agro-based : e.g., Sugar, cotton textiles, and vegetable oil.
2. Mineral-based : e.g., Iron \& steel (metallic) and cement (non-metallic).
3. Chemical-based : e.g., Petrochemicals, plastics, and synthetic fibers.
4. Forest-based : e.g., Paper, lac, and furniture industries.
5. Animal-based : e.g., Leather and woollen textiles.