Zhengzhou Mateiral CO., LTD. Dedicating in the development and production of Phosphorus Ligands Proficient in the formation of aryl C-C bond and C-N bond by the Suzuki coupling and Buchwald-Hartwig amination reactions Applicating in the R&D and production of OLED intermediates and new functional materials One of the leading manufacturers of Phosphorus Ligands and Reliable service provider of coupling solutions in China.