42 Scientific and technological services, namely, scientific research and analysis of petroleum; Product design and development in the field of manufacturing machinery for the nuclear, oil and hydroelectric power industry; Design and development of software; Design, maintenance, rental and updating of computer software; scientific and industrial research; engineering research; Industrial process research; Product research; Research in the scientific field provided by engineers; Research in the field of manufacturing machinery; Research in the field of nuclear energy power generation technology; Research in the field of artificial intelligence technology; Research in the field of computer programs and computer software; Research in the field of software development; Research related to industrial machinery; Research related to mechanical engineering; Research on mechanics; Industrial investigations