Located in Xuchang, Henan, China. Renhe flatulence patch manufacturer name: Henan Qian Sheng Pharmaceutical Technology Co., Ltd. Origin: Xuchang City, Henan Province, China. Renhe flatulence patch is made of many kinds of Chinese herbal medicines. It is absorbed by human body through the principle of acupoint penetration, and has the effects of regulating qi, relieving bloating, reducing adverse reactions, stopping vomiting, promoting qi circulation and relieving pain, clearing away heat and toxic materials, and regulating stomach.