Generally, it can be treated in a beauty hospital at different prices. I know a company that specializes in treating brown-blue moles. My friend has been treated in Chongqing Meijia Plastic Surgery Hospital, and the effect is good. The technology used in the treatment is "golden light", and as many as 10 sets of cutting-edge instruments are used for treatment. I'll give you their address, which is on the floor of China Merchants Bank 10, next to Starlight 68, Sunshine City, Jiangbei District, Chongqing.