Hunan yadi Technology Co.,Ltd. is built in 1983, which is located in Hunan Province. It is mainly engaged in the development and producing of Color Formers for Carbonless Paper and other fine chemicals. It is one of the three largest producer of CVL in the world. The annual output of CVL is more than 800Mt. The goods is supplied to the main producers of Carbonless Paper in Asia, Europe and America.

Enterprise attachs importance to the quality of goods, has built a strict Quality control system. The company has built a full set of water treatment system in order to reach the emissions standards of industrial waste water.