Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software; Includes mainly services provided by persons, individually or collectively , in relation to the theorectical and practical aspects of complex fields of activities; such services are provided by members of professions such as chemists, physicists, engineers and computer specialists; Includes the services of engineers who undertake evaluations, estimates, research and reports in the scientific and technological fields; scientific research services for medical purposes, services for optimizing development and marketing of medical devices