Healthcare
| Wed 03 Jun 2026
Beijing, June 3 -- Poly Changda Engineering has submitted a patent application for Heavy-load Walking Beam Mounted at Bottom of Trolley. This invention was developed by Fang Lijie, Xiao Donghui, Qiu Wenzhou, Xu Wei, Liu Benhua, Yang Wenda, Xu Weicong, Niu Ziru, Tang Yao, Wang Hao, Li Yuanhao and Liu Junbin.
The patent applicati..