1. The business scope of Jiangsu Sigma Company includes: research and production of medical device technology; Sales of medical devices and cosmetics; Technical consultation, technology development, technology transfer and technical services for electronic computers and optical instruments;
2. Shanghai Sigma High-tech Co., Ltd. mainly deals in ultraviolet therapeutic instrument, vitiligo 308 therapeutic instrument, hospital phototherapy instrument, 308 nm led, leukoplakia treatment, 31nm therapeutic instrument, uvb phototherapy instrument and other products.