1902, the emerging British American Tobacco Company entered China, took the lead in purchasing the assets of American Tobacco Company in Shanghai, and successively established tobacco branches and cigarette factories in Shanghai and China. In addition to producing "Pinhai", "Pirate" and "Daying" cigarettes, the brand of "Hademen" was registered at 19 19. After the 1920s, Qidong Tobacco Company, a subsidiary of British American Tobacco Company, and Old Bado & Sons Tobacco Company both produced "Hadmen" brand cigarettes. 1923 British American Tobacco Company established its factory in Qingdao, which is called "Qingdao Branch of British Tobacco Co., Ltd.". Besides producing many brands of cigarettes, it also produces brands such as "Daqianmen" and "Hadmen".