42 Scientific research and development in the field of alternative energy generation, solar thermal energy, photovoltaic solar energy, water conservation systems, water treatment systems, and water purification systems; Product research and development in the field of alternative energy generation, solar thermal energy, photovoltaic solar energy, water conservation systems, water treatment systems, and water purification systems; Research and development of computer software in the field of alternative energy generation, solar thermal energy, photovoltaic solar energy, water conservation systems, water treatment systems, and water purification systems