sentences:  Yunnan Baiyao is sold in powder, tincture, plaster, paste, aerosol, or tablet form.The medicine, developed by Qu Huangzhang in 1902, is designated as one of two Class-1 protected traditional Chinese medicines which gives it 20 years of trade protection in China.Yunnan Baiyao products are manufactured and distributed by a state-owned enterprise, Yunnan Baiyao Group () in Yunnan, China.