Construction
| Sat 08 Nov 2025
Beijing, Nov. 8 -- Henan Yuanchenxiang Construction Eng Co Ltd has submitted a patent application for Surveying Instrument Anti-toppling Positioning Device for Engineering Surveying and Mapping. Li Cunwen, Ma Shuai, Song Lei, Lin Aili, Wang Jun, Ma Fang, Liu Yuying, Shen Jingjing, Liang Haiyun, Shao Yang, Li Yuehua, Wang Ru, Liu..