68 INDUSTRY | MT 6821 mechanical engineering | NT1 aeronautical industry | NT1 aerospace industry | NT1 cycle and motorcycle industry | NT1 general mechanical engineering | NT1 machine-tool industry | NT1 motor vehicle industry | NT1 railway indus
68 INDUSTRIE | MT 6821 industrie mécanique | NT1 construction navale | NT1 cycle et motocycle | NT1 industrie aéronautique | NT1 industrie aérospatiale | NT1 industrie automobile | NT1 industrie de la machine-outil | NT1 industrie ferroviaire | N