Plastics
| Sat 17 Jan 2026
Beijing, Jan. 17 -- Qingdao Henghaisheng Ocean Tech Co Ltd has submitted a patent application for Underwater Positioning Signal Mark Plastic Forming Device. This invention was developed by Yu Xiaoyan, Liu Gang, Hu Shoutian, Song Dapeng, Zhang Yupeng, Yu Lingyu, Li Chengchuan, Yu Weiwei, Yue Zenghui and Shi Tian.
The patent ap..