Kunming Hong Pharmaceutical Co., Ltd., located in Kunming National High-tech Industrial Development Zone, formerly known as Changhong Natural Pharmaceutical Factory, was established in 1993, in 1997 officially registered as a Sino-US joint venture Kunming Hong Pharmaceutical Co., Ltd., China's Yunnan Yuhong Pharmaceutical Group Co., Ltd.

On February 27, 2014, Bayer Group announced the acquisition of all shares of Yunnan Yahong Pharmaceutical Group. The industry has carefully curated an exhibition of employee art on the theme of "Art and Meaning". After two months of submission and selection, the award ceremony for the event was successfully held on May 20th, which also brought a successful conclusion to the first time that The event was held by Yin hong.