Packaging & Containers
| Mon 27 Jul 2026
Beijing, July 27 -- State Intellectual Property Office of China has received Laiwu Power Supply State Grid Shandong Electric Power patent application for Control Method and System for Waterproof Well Lid Production. Gao Liqiang, Guo Xingchao, Jia Huiyong, Hu Yanliang, Lin Kai, Zhang Jianmin, Pei Xiugao, Qi Peng, Wang Jian, Gao L..