As the iniative enterprise of Continuous Dynamic Reflux Extraction Unit, which was developed by ourselves in 1993 and appraised by some exerts to have reached the international advanced level, we have won several patents out of this unit. This device has for many times been assessed as the excellent pharmaceutical equipment by North China Pharmacy Company, King Sea of Changchun, Damin Food Company, Red Dragon in Chifeng, Sanjin Pharmaceutical Entreprise in Guilin, etc. Besides being utilized at home, it has also been sold to the USA, Uzbekistan and other foreign countries.