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| Tue 18 Nov 2025
Beijing, Nov. 18 -- Chinese Patent for Elevator Advertisement Signboard Convenient to Replace has been issued to Beijing Derui Times Logo Tech Co Ltd. This invention was developed by Wang Xuewei, Huang Fuli, Gao Yunfei, Wu Qi, Yang Yi, Yang Jindong, Shin Byung-jun, Zhang Chunhui, Song Xiaohui and Li Mengmeng.
The patent appli..