64 PRODUCTION, TECHNOLOGIE ET RECHERCHE | MT 6411 technologie et réglementation technique | BT1 matériau avancé | RT céramique [6846] | fibre de verre [6811]
64 PRODUCTION, TECHNOLOGY AND RESEARCH | MT 6411 technology and technical regulations | BT1 advanced materials | RT ceramics [6846] | glass fibre [6811]