Direct DyeChina 1, 3, 5-Benzenetricarboxylic Acid Chloride CAS 4422-95-1 Trimesoyl Chloride, Find details about China 1 3 5-Benzenetricarboxylic Acid Chloride, 4422-95-1 from 1, 3, 5-Benzenetricarboxylic Acid Chloride CAS 4422-95-1 Trimesoyl Chloride