Date: Oct. 9, 2019 To:
Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern:
The Tiinlab Acoustic Technology Limited ,the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the Tiinlab Acoustic Technology Limited solely in matters relating to the application for an FCC equipment authorization for FCC ID : 2ASDIEHD9001TA including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the Tiinlab Acoustic Technology Limited. The Tiinlab Acoustic Technology Limited. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, He Xiu Manager Tiinlab Acoustic Technology Limited