Enviornmental
| Wed 05 Nov 2025
Beijing, Nov. 6 -- Henan Jinrui Energy Co Ltd has been granted a patent for Closed Collection Device for Waste Liquid. Dang Xiaofeng, Qiao Erwei, Zhao Pengbo, Wang Zhao, Yu Yongbo, Zhang Zhuo, Li Yachao, Nie Wenjie, Zhao Jingwei, Li Chengcheng, Hou Shaojie, Cheng Dongwei and Li Chao developed the invention.
The patent applica..