On February 16, the Office of the People’s Government of Yantai published a list of Yantai high-quality patent projects in 2022. The patent “A Compound Preparation for External Use in the Treatment of Hemorrhoids”(No.: ZL201310097090.6) of Rongchang Pharmaceuticals, Ltd. was selected into the second-class high-quality and high-value patent projects.
“A Compound Preparation for External Use in the Treatment of Hemorrhoids” protects the compound preparation for external use of Gangtai and its preparation method.

In 1993, Rongchang Pharmaceuticals developed a new therapy of “belly button patch for hemorrhoids” in combination with four modern techniques of concentration, transdermal, sustained release and patching. According to the principle of “external treatment of internal diseases”, Rongchang Pharmaceuticals developed the exclusive product Gangtai, which was listed as National Confidential Variety, created a new dosage form of “belly button patch”, and developed a series of hemorrhoid treatment products such as Gangtai Ointment and Gangtai Suppository.