Date: Jan. 13, 2020 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen CTB Testing Technology Co., Ltd. Add: Floor 1&2, Building A, No. 26 of Xinhe Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, China to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with HUIZHOU SINDE ENERGY SAVING TECHNOLOGY CO., LTD. Add: XINXU town Tangkou Changcheng Industrial Zone, Huiyang District, Huizhou City, Guangdong Province China
<Signature>
Name: Edward Choy Title: Manager Company: HUIZHOU SINDE ENERGY SAVING TECHNOLOGY CO., LTD.