Energy
| Wed 11 Nov 2026
Beijing, Nov. 11 -- State Intellectual Property Office of China has awarded a patent to Shaanxi Yanchang Petroleum Group for Catalytic Cracking Flue Gas Desulfurization Sludge Reduction Device. Li Zhigang, Zhang Feng, Zhang Hao, Bai Xiaotao, Liu Xiping, He Bin, Ren Wanhong, Gao Wei, Wei Jinrong, Ji Guanghua, Bai Pengcheng and Zh..