liuxilin1215
第2楼2017/06/19
只有:
BS EN ISO 17234-1-2015 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers Part 1: Determination of certain aromatic amines derived from azo colorants
BS EN ISO 17234-2-2011 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers Part 2: Determination of 4-aminoazobenzene (ISO 17234-2:2011)