Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High Quality Benzenemethanaminium,ar-ethenyl-N,N,N-trimethyl-, chloride (1:1)CAS NO.: 26616-35-3
High Quality 4,4'-CyclohexylidenedianilineCAS NO.: 3282-99-3