Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High quality 2,2'-Azobis(2-methylpropionitrile)CAS NO.: 78-67-1
High quality L-(-)-Dibenzoyl-L-tartaric acid monohydrateCAS NO.: 62708-56-9
Factory supplu high quality Tetrapropylammonium bromideCAS NO.: 1941-30-6
High quality Benzyltriethylammonium chlorideCAS NO.: 56-37-1