42 [ Industrial, mechanical, scientific and technological services provided by engineers, namely, scientific Industrial research, mechanical research, and scientific research, technological research in the field of aerospace; industrial and technological research in the field of aerospace, and mechanical and scientific research provided by engineers; design services, namely, research and development of new products for third parties in connection with industrial, mechanical, scientific and technological matters; Engineering services, namely, providing estimates, calculations, research and technical opinions in connection with science and technology; engineering services in the field of aerospace; technical research services in connection with physics; technical consulting, assessments, research, tests, monitoring relating to technology provided by engineers, particularly with relation to transport technology engineering, environmental protection and energy; materials testing; engineering services, namely, providing technical assessments in the field of aerospace and environmental assessment and planning; technical research and design, namely, research and development of new products for third parties relating to technology and aeronautics; technical consulting provided by engineers relating to aeronautics; technical project studies, namely, conducting of feasibility studies; scientific and technological design of assembly apparatus, vehicle tools and spare parts, apparatus for locomotion by land, air, water or rail, aircraft, aircraft wings, blades, winglets, air vehicles, space vehicles, satellites, launching vehicles, dirigible air-balloons, aerostructures, aeronautical apparatus machines and devices; design services, namely, research and development of new aircraft for third parties and their component parts; flight tests, namely, quality control services for others; vehicle certification and re-certification, namely, quality control services for others ]