Tobacco
| Thu 07 May 2026
Beijing, May 7 -- China Tobacco Yunnan Industrial has sought patent for One-time Forming Equipment and Method for Special-shaped Gel Core Filter Stick. This invention was developed by Liu Zhihua, Wang Hao, Zheng Han, Li Geng, Ding Haiyan, Zhang Ying, Tang Jun, Yue Baoshan, Shen Yanfei, Wang Xu, Yu Tingting, Xie Jiao, Xu Li, Gui ..