we introduced epoxy coating techniques from Jilin University, and applied it to practical manufacture. This technique was researched and developed by the professors in Jilin University. It was of high technology, and helped us to win the market. During the twenty-year development, we are working with many famous universities, such as Zhejiang University, Beijing University of Chemical Technology, Jilin University and so on. With their support, we developed and manufactured many Donghai-special coatings. These products include CZZ-9201 dark coating, CZY-9702 pure polyester flat coating, CHEN-2001 antisepsis coating. Among all the products, the CHEN black dark coating is our unique product. The technique to make this product is owned by ourselves, and is first-class in the world. Moreover, this product is recommended to be one of the best products in “Famous Brands Guide of Zhejiang Province”.