Engineering
| Mon 17 Aug 2026
Beijing, Aug. 17 -- Yinchuan Dongfang Pneumatic Transportation Equipment has secured a patent on Pressing Type Sample Barrel Cover Opener. Zhou Libo, Zhang Xin, Cheng Dong, Zhong Wei, Sun Pengfei, Zhang Yinping, Luo Jinhua, Ma Jiapeng, Dong Fei, Yang Haotian and Su Xiaojun developed the invention.
The patent application numbe..