NF T50-015-1*NF EN ISO 24025-1:2020 Plastics - Sulfone polymer moulding and extrusion materials - Part 1 : designation system and basis for specifications
2020NF T50-015-1*NF EN ISO 24025-1:2020 Plastics - Sulfone polymer moulding and extrusion materials - Part 1 : designation system and basis for specifications