1. Analytical Industry: It analyses and separates different elements from the same materials, as in the case of oil refinery.
2. Genetic Industries: These industries remain engaged in breeding plants and animals for their use in further reproduction. The seeds, nursery companies, poultry, diary, piggeiy, hatcheries, nursery, fisheries, apiary etc are classic examples of genetic industries.
3. Construction Industries: These industries are involved in the construction of building, dams, bridges, roads, as well as tunnels and canals.
