The main material of bedrock is slate, a natural mineral containing more than 26 kinds of beneficial elements to human body, which has great energy release to human body through artificial action.
Under the action of strong far infrared rays and rich negative oxygen ions radiated from the rock disk, people excrete a lot of body sweat, which promotes the metabolism of the body from the inside. It has obvious effects of detoxification, beauty and skin care, and slimming. This is the most popular spa treatment in the world today.