Shipping and Marine
| Sun 14 Jun 2026
Beijing, June 15 -- CCCC Second Harbour Engineering Co Ltd has submitted a patent application for Deepwater Spiral Soil Taking Dredging Ship and Dredging Method. This invention was developed by Guan Qingfei, Yang Jia, Liu Xiucheng, Wu Xuefeng, Cheng Maolin, Li Xiang, Zhai Shihong, Yang Xiuli, Xiao Hao, Zhang Yipeng, Li Tao, Yan ..