Petrochemicals
| Tue 11 Mar 2025
Beijing, March 11 -- State Intellectual Property Office of China has awarded a patent to Luoyang Longhui Petrochemical Eng for large-diameter flange spreader. Shi Qi, Cheng Xiangmin, Zhou Xuebing, Zhao Pan, Liu Yunpeng, Han Seung-Kook, Zhang Jincai, Zhang Lu and Zhao Mingming developed the invention.
The patent application nu..