Hebei Yanuo Chemical Industry Co.,Ltd. Is a leading producer for Sulfur Chemicals and Pyridine Derivatives in China. The company is ISO9000 certified and Imp/Exp right granted. The Sulfur Chemicals consist of Dimethyl Disulfide, Dimethyl Sulfoxide, Methane Sulfonyl Chloride and Methane Sulfonic Acid. The Pyridine Derivatives cover Aminopyridine, Bromopyridine and others. The R&D center focus on research and custom manufacturing for Pyridine Derivatives. Yanuo's management at all levels share the philosophy that client satisfaction leads to our success. We place a great deal of emphasis on following strict production process and analytical procedures in order to guarantee the highest level of product quality which has earned us many satisfied and loyal customers over the years.