Yingkou Tanyun Chemical Research Institute Corporation, Tanyun Chemical for short, is a corporation merged by Yingkou Petroleum Chemical Research Institute Co., Ltd. and Yingkou Tanyun Industrial Fine Chemical Co., Ltd. The corporation is a research type manufacturing enterprise specialized in the development and research of fine chemical products. It is located in the western of Xinhu Street in coastal industrial base of Liaoning (Yingkou), covering an area of 65,000 square meters. Tanyun Chemical mainly produces more than 50 fine chemical products in the categories of polyurethane joint mixture series, boron series, agrochemical and medicinal intermediate series, electronic liquid crystal materials, military chemicals as well as custom chemicals, etc.