Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High quality Phenol,4,4'-sulfonylbis[2-aminoCAS NO.: 7545-50-8
High quality 1,4-Benzenedicarboxylicacid, 1,4-dimethyl esterCAS NO.: 120-61-6
High quality Sulfoxonium,trimethyl-, iodide (1:1)CAS NO.: 1774-47-6
High quality 1,2-Diazenedicarboxylicacid, 1,2-diethyl esterCAS NO.: 1972-28-7