OSI group is formed by takingOSI Group Co. , Ltd. as the core enterprise, it has five subsidiaries, including Shandong Zhanhua OSI Chemical Co. , Ltd. , Zhejiang Bleome Import & Export Co. , Ltd. , Shanghai Yaowo International Trade Co. , Ltd. , Hangzhou Dusaidov Trade Co. , Ltd. and Jiangxi Oran Enterprise Management Co. , Ltd. , is a chemical, petrochemical, foreign trade, tourism, services, foreign investment and capital operation as one of the large enterprise groups. The group covers an area of more than 600 acres, with garden-style production plant and modern office facilities. In cooperation with the Institute of Physical and Chemical Technology of the Chinese Academy of Sciences, the group has established the Joint R & D Center of the Institute of Physical and Chemical Technology of the Chinese Academy of Chinese Academy of Sciences and the Jiangshan pilot plant of the Institute of Physical and Chemical Technology of the Chinese Academy of Sciences. The group pursues the enterprise spirit of“Pursuing the extreme and creating the brilliant”, and always regards the scientific and technological innovation as the eternal theme of the Enterprise's survival and rapid development. The company was founded in 1998, formerly known as Zhejiang OSI Chemical Co. , Ltd. , is a leading fluorescent brightener products, petrochemical products research and development, production, sales and service in one of the high-tech environmental protection-oriented chemical enterprises. It produces more than 20,000 tons of fluorescent brighteners and more than 50 kinds of products, and 500,000 tons of petrochemical products are mainly used in dyestuff, plastics, medicine and other industries. Products are exported to Europe, East Asia and Southeast Asia countries, and with excellent quality, integrity of sales and perfect service, has won wide praise and praise from customers at home and abroad.