Tobacco
| Fri 06 Nov 2026
Beijing, Nov. 5 -- State Intellectual Property Office of China has awarded a patent to China Tobacco Hunan Industrial for Double-filtering Cigarette Holder. Qin Yanhua, Tan Chao, Liu Zhen, Luo Jia, Tan Haifeng, Feng Ye, Li Zifeng, Luo Wei, Cheng Qiao, Ding Duo, Chen Qian, Xie Shenglin, Gong Haiqin and Han Xing developed the inve..