Engineers in this sector, take on the laws and principles of chemistry, to provide solutions to problems that relate to the production and use of chemicals and biochemicals. They are either employed by the government for research and development, or by large-scale chemical manufacturing, biotechnology, or health care companies to plan and test their chemical products. They may also be hired by manufacturing companies other than chemical companies, who produce food, clothing, electronics, energy, or paper. They have a thorough knowledge of the chemical manufacturing processes and it's effect on the environment.