Lighting
| Fri 14 Mar 2025
Beijing, March 14 -- Qingdao Evergreen Maritime has secured a patent on adjustable navigation buoy lamp holder. Yu Xinbo, Liu Wei, Zhang Zhijie, Liu Lixian, Wang Qingwei, Zheng Yangxuan, Zhang Yaling and Liang Qianqian developed the invention.
The patent application number is CN202323145641U 20231121. The patent publication n..