3,4-二甲基邻苯二胺;3,4-Dimethyl-phenylenediamine;CAS:41927-01-9;规格:98%;包装:1g
3,4-二甲基邻苯二胺;3,4-Dimethyl-phenylenediamine;CAS:41927-01-9;规格:98%;包装:5g