The company was founded in 1993,formerly known as Shangyu O-jiang chemical industry and changed to Zhejiang YUDA Chemical Co.,Ltd in 2003. We have a perfect quality management system and strong ability of quality control , annual sales has more than 40,000 tons.There are three tech research institutions located In Dalian,Nanjing and Shangyu city,meanwhile we have a long-term stability of technical cooperation with Tsinghua and Nanjing University. In the past 30 years,we have been the high-tech enterprises,got the patent demonstration enterprise of Zhejiang province.Undertake the national innovation fund projects and provincial level of science and technology projects,owning dozens of patent and multiple national level new product. Our products have the advantage of low impurities,good transparency,colloidal particles uniform, dense structure and good high temperature stability which are widely used in precision casting,refractory materials, construction, painting, batteries,textile and paper-making indstry,exported to Europe,USA and other Asia countries. We have passed ISO9000.2008 certification and will be reviewed by qualified third-party every year.We hope to get a good cooperation with you all over the world well.