Retail & Household
| Wed 20 May 2026
Beijing, May 21 -- State Intellectual Property Office of China has received Shandong Wanbang Petroleum Tech Co Ltd patent application for Ton Bag Unpacking Machine. Cui Xiaodong, Sun Zhongxing, Li Ping, Su Xiaofei, Shi Liang, Yang Cui'e, Wang Honglian, Qin Guanying, Zhao Yanbo, Zhang Cuicui, Liu Cunxin, Han Kexing, Chen Ruixia, ..