HEBEI YANUO BIOSCIENCE CO.,LTD. is one of the leading manufacturers of thiochemicals and pyridines in China. The company is competitively growing by offering global customers its key products - methanesulfonyl chloride, methanesulfonic acid, levulinic acid and pyridine derivatives. Yanuo's business integrates research, development, production and distribution as an effective process. Its credibility has been recognized by the ISO 9000 certificate.

Yanuo is a research-based and customer-oriented enterprise. Its professionals are dedicated to the discovery of innovative pyridine derivatives, which are widely used as intermediates in the chemical and pharmaceutical industries. Customer satisfaction is the highest value pursued by Yanuo's management strategy. With this corporate philosophy and the supreme quality of its products Yanuo has earned, and will continuously earn the loyalty of its numerous customers around the world.

Headquartered in Shijiazhuang, Hebei Province, Yanuo has three operation bases nationwide. The plant complex at Shijiazhuang is specializing in development and production of pyridine derivatives and methanesulfonic acid. Two other subsidiaries, located in Wuhai, Inner Mongolia and Nantong, Jiangsu Province, respectively, are emphasizing on production of thiochemicals and 2-chloronicotinic acid.