Retail & Household
| Thu 16 Apr 2026
Beijing, April 17 -- China Traffic Shitong Chongqing Heavy Industry has been granted a patent for Crawling Ladder Capable of Being Used for Gallery. This invention was developed by Pei Nan, Yang Yong, Zhang Guodong, Wu Yujiao, Zhao Shuai, Tian Benwang, Gao Bo, Li Qiao, Xu Minghai, Zhang Yuanbang and Lei Shuai.
The patent appl..