- Districts and municipalities.
- Industries, factories, agricultural and animal raising companies.
- Marine companies.
- Technical, commercial and transport companies.
- Governmental service providers and organizations.
- Environmental entities.
- Universities and technical colleges.
- Water and drain supply companies.
- Businessmen, technical managers, environmentalists, ecologists, chemists, chemical engineers, engineers, biologists, geologists, agriculturists, architects.
- Professors, students, researchers, consultants, investors.