Tong Ren Tang is a Chinese pharmaceutical company founded in 1669, which is now the largest producer of traditional Chinese medicine (TCM). The company is headquartered in Beijing, and is engaged in both manufacture and retail sales, operating drug stores predominantly in Chinese-speaking regions.
Tong Ren Tang is considered one of the "Big 4" traditional Chinese medicine brands still in existence. The four companies include (listed in order of age not size): Guangyuyuan (1541 AD), Guangzhou Chen Liji (1600 AD), Beijing Tong Ren Tang (1669), and Hangzhou Hu Qing Yu Tang (1874).
Tong Ren Tang and GuangYuYuan have been officially recognized as "China Time-Honored Brands" by the Ministry of Commerce of the People's Republic of China.
Like many older Chinese companies, Tong Ren Tang has struggled to adapt to market changes. In recent years, Tong Ren Tang has modernized its facilities, and changed its trade name to Tongrentang.
It remains one of the oldest surviving brand names for traditional Chinese medicine, and has wide name-recognition among Chinese and Asians worldwide. It is also one of the world's largest TCM companies, with products sold in countries all over the world.
According to en.wikipedia
