We are a Union of chemistry in China, consists of chemists，engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

1.Our services：A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

Our own factory produces direct sales with absolute price advantage Application:Pharmaceutical industry Transportation:By sea Port:Shanghai/tianjin

2,7-NAPHTHALENEDISULFONIC ACID 4-AMINO-3,6-BIS[[4-[(4-AMINOPHENYL)AZO]-2-METHOXY-5-METHYLPHENYL]AZO]-5-HYDROXY-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportati