Construction
| Fri 07 Aug 2026
Beijing, Aug. 7 -- Sinohydro Engineering Bureau 4 has sought patent for Road Rolling Device with Auxiliary Rolling Structure. This invention was developed by Zhu Chenglin, Pu Jianjin, Sun Dehui, Si Lanjiao, Yang Xinyuan, Tang Xin, Yan Rubo, Si Yongfeng, Bai Lisha, Su Jiang, Liang Jie and Cai Honglei.
The patent application nu..