Legal. According to 39 Health.com, in China, all drugs and medical devices need to be strictly examined and approved by the State Administration of Pharmaceutical Products before they can be listed. Renhe Jingu Qutong Plaster is a product produced by Renhe Pharmaceutical Co., Ltd., which is mainly used to relieve various pains, such as neck, shoulder, waist and leg pains. It is positioned in the general aging market and is a formal and legal product.