Pharmaceutical intermediates series
Disperse golden yellow se-rn
Dye intermediates, also known as intermediates, generally refer to various aromatic hydrocarbon derivatives used in the production of dyes and organic pigments. They are produced through a series of organic synthesis unit processes using aromatic hydrocarbons such as benzene, toluene, naphthalene and anthracene from coal chemical and petrochemical industries as basic raw materials.
High-end, novel and differential
Disperse orange s/4rn (environmentally friendly)