Chemicals
| Fri 19 Dec 2025
Beijing, Dec. 20 -- Cangzhou Dahua Co Ltd has received a patent for Phosgene Synthesis Replacement and Catalyst Drying Device. This invention was developed by Liu Zeng, Ban Hongsheng, Li Yongkuo, Du Xiaoling, Meng Fanjing, Yang Hua, Wang Liguo, Zhao Xuepeng, Zheng Junfeng, Tian Ye, Zhou Hongsen and Yu Zhaoqiang.
The patent ap..