Красители

Nigrosine Black
Nigrosine Black Продавец: Nigrosine Black. Nigrosine is a black dye that is formed directly on cotton fabric and is insolub...
Basic Green 4
Basic Green 4 Продавец: 产品名称:基本绿4 CI No: 42000 CAS号: 569-64-2 化学族:  C23H25ClN2  分子量:  364.91  相对...