Plastics
| Wed 22 Apr 2026
Beijing, April 23 -- Chengdu Polygon Chuangke Electronics Co Ltd has submitted a patent application for Three-time Core-pulling Mold Structure. This invention was developed by Xiao Songlin, Yang Shenglin, Liang Songting, Xue Chao, Zheng Xuejun, Li Maojun, Xi Zhenhuan, Guo Zhizhong and Lin Gang.
The patent application number i..