IRay Technology Co., Ltd. Date (2022-05-23) TUV SUD America Inc. 10 Centennial Drive Peabody, MA 01960, USA Dear Sir or Madam, We, IRay Technology Co., Ltd. 11GUIYANG STREET, YANTAI ECONOMY AND TECHNOLOGY, DEVELOPMENT DISTRICT, YANTAI SHANDONG P.R.CHINA hereby authorize Marlene Sealey of TUV SUD America, 10040 Mesa Rim Road, San Diego, CA, 92121 to act as our agent in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Yours sincerely, Name: Peng Zhang Title: Quality Supervisor