NF T31-312-2*NF EN ISO 18451-2:2018 Pigments, dyestuffs and extenders - Terminology - Part 2 : classification of colouring materials according to colouristic and chemical aspects
2018NF T31-312-2*NF EN ISO 18451-2:2018 Pigments, dyestuffs and extenders - Terminology - Part 2 : classification of colouring materials according to colouristic and chemical aspects