Huaihua Huirui Agricultural Technology Co.,Ltd was established in 2020 and is located in Qiancheng Town, Hongjiang County, Huaihua City, "the hometown of China's candy oranges.". Equipped with five production lines, it has won the honorary title of Excellent Private Enterprise in Hongjiang City, and undertakes the production of large single products of Plant Extract of Changsha Huir Biological-tech.

Main products: Citrus aurantium (Hesperidin, Diosmin, Neohesperidin, Neohesperidin dihydrochalcone/NHDC, Naringin, Naringenin, Apigenin); Sophora japonica extract (Rutin, Quercetin); Sophora japonica fruit extract (Sophoroside, Genistein); Berberine; Milk thistle (Silymarin, Silybin); Piperine (Tetrahydropiperine), etc.