We normally think and practice corresponding on the change of circumstance, and grow up. We aim at the achievement of a richer mind and body and also the living for Acid Black 172, 2-Hydroxy-4-Sulfohydroxide-1-Naphthalenediazonium, Inner Salt, Anhydrous Cocl2, INTERMEDIATE,Cocl2 6 H20. It can be our wonderful honor to meet your requires.We sincerely hope we can cooperate along with you inside the around long term. The product will supply to all over the world, such as Europe, America, Australia,Seychelles, Japan,Croatia, Sierra Leone.Our company always committed to meet your quality demand, price points and sales target. Warmly welcome you open the boundaries of communication. It is our great pleasure to service you if you need a trusted supplier and value information.