Chemicals
| Sat 13 Dec 2025
Beijing, Dec. 13 -- State Intellectual Property Office of China has awarded a patent to Henan Shenma Nylon Chemical for Differentiated Production System for Refined Hexamethylenediamine. Ma Xiaopeng, Liu Yaowen, Zhang Min, Lin Bing, Li Yaqi, Li Zhenfeng, Yan Qingshang, Wu Lubing, Xu Zhenwei, Liu Junqiang, Deng Dongkui, Cheng Yao..