It is a good health care and therapeutic product. Medical device products approved by the Ministry of Health. Bian Shi has been treating diseases for thousands of years. It is a treatment method that Chinese medicine ranks ahead of acupuncture. 1997, according to archaeological discoveries, a series of Bian Shi's treatment methods and Bian Shi tools were sorted out. This is a kind of stone that can cure diseases. The idiom "criticizing the disadvantages of the times" is the source and example of Bian Que's use of the stone to cure diseases and save lives. You can buy your own product experience, and others' opinions are not as convincing as your own practice.