Shipping and Marine
| Wed 16 Sep 2026
Beijing, Sept. 15 -- Dalian Shipbuilding Industry has secured a patent on Sail Inversion Mast Device. Cheng Long, Li Wenhe, Liu Huachao, Mao Haibo, Zhang Xing'an, Fang Ming, Xu Youhui, Li Wei, Zhao Xiaoling, Zhang Qiyuan, Li Xia, Liu Jiahao, Wang Zheng and Yan Ziqiang developed the invention.
The patent application number is CN..