According to Tian Yan's inquiry, Yuyue Technology is a company mainly engaged in research and development of medical instruments and equipment, medical engineering services, motor vehicle security inspection equipment and big health industry. It has subsidiaries such as Jiangsu Yuyue Medical Equipment Co., Ltd., Shanghai Yuyue Medical Equipment Co., Ltd., Anji Yuyue Medical Equipment Co., Ltd., Nanjing Yuyue Software Technology Co., Ltd. and Jiangsu Yuyue Network Technology Co., Ltd.