Alpha(shijiazhuang) Chemical Co., Ltd
Country: China (Mainland)
Business Type: Trading Company
3,3',4,4'-Biphenyltetracarboxylic dianhydrideCAS NO.: 2420-87-3
2,3,3',4'-Biphenyltetracarboxylic dianhydrideCAS NO.: 36978-41-3
4-Hydroxy-7-methylamino-2-naphthalenesulfonic acidCAS NO.: 22346-43-6