FCC ID: 2BB9P00002 4K Wireless Conferencing System

Standard Form Sample Agency Request Letter Number:

MS-0004558 Version:

2.1 Page:

1 of 1 The following is a sample Agency Request letter, which needs to be completed on company letterhead, signed by an authorized Applicant/Agent, and submitted to TV Rheinland. Authority to Act as Agent Date: __2023/11/02______ TUV Rheinland of North America, Inc. 1279 Quarry Ln., Ste. A Pleasanton, CA 94566 To Whom It May Concern:

I appoint Mr. Storm Shu 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 FCC or Industry Canadas 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, as specified by TUV Rheinland Group, still resides with _Changsha Langyuan Electronics Technology Co., Ltd. _Building A20, Section II, Zhongdian Software Park, No. 18, Jianshan Road, High-tech Development District, Changsha,Hunan,P.R. China For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Expiration Date: _____( 12 months)_____ By:

(Signature) _Guangyang Wang_

(Print name) Title:

_______Lab. Manager______ Telephone:____+86-15763789442____ On behalf of: Changsha Langyuan Electronics Technology Co., Ltd.

(Company Name) This document is issued in strict confidence and shall not be reproduced, copied, or otherwise used without the expressed written consent of the Management of TV Rheinland Industrial Solutions, Inc. Printed: November 21, 2023 Approved Documents Valid 2 Days Verify as current revision when invalid.

va MUANZSA LANG y Malt RICCI Tenis Vee Certification Designating a US Agent for Service of Process To: Federal Communications Commission Date: ULoT 191 7435 Oakland Mills Road, Columbia, MD 21046, USA Dat: Attnctatinn Ctatamant .. Dart 9 O44/A\V/7) filing FOU ID. 4DDSFUUUVe Changsha Langyuan Electronics Technology Co., Ltd. ("the applicant) certifies that as of the date of the filing of the appication, Stariver Consulting Company(the agent) is our designated U.S. agent. We acknowledge the applicant's consent and the designated agent for service of process's obligation to accept service of process. The applicant accepts to maintain an agent for service of process for no less than one year after the grantee nas terminateg al Marketing and IMportavion OF Ne CONCIUSION OF ally ne ge ne wah eadasines eee es reenoncihility to inform the ECC whenever the aqgent information changes. Company Name: Changsha Langyuan Clectronics lecnnology Uo., Lid. Contact Person: Guangyang Wang Address: 15/F. Building B1. NO.11. Guanapu Road, Huangpu District, Guangzhou, Guangdong, P.R. China 1. 200 4E7C27920/AA9 Email: guangyang.wang@lango-tecn.cn FCC FRN: 0033964669 ane Anant Lompany Name. olaliver VONSUNNG VOMpany Contact Person: Chong He Address: 2363 James St #1098 Syracuse, NY 13206, USA Tal - (215) 418 97590 Slew, Cee owe eee FCC FRN(Optional): 0035400455 Sincerely yours. T The Anant _ a Stariver Consulting Company TRamnany Nama | Channehs | anovuan Electron 7 | Technology Co.. Ltd.

| Contact Person | Guangyang Wang - Chong He

| Means A york, Hoh signature

| ( @tcorg- -te

Request for Confidentiality Letter Changsha Langyuan Electronics Technology Co., Ltd. Date: __2023/11/02______ Subject: Confidentiality Request for FCC ID: ______2BB9P00002______ Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent n/a Permanent Permanent Permanent Permanent Permanent Permanent Permanent Exhibit Block Diagrams External Photo Internal Photos ***

Operation Description/Theory of Operation Schematics Test Setup***

Software Security Description Users Manual***

Part List/ Antenna Gain Information Datasheet ______Changsha Langyuan Electronics Technology Co., Ltd.______ has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to

"competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of ___(specify number of days not to exceed 180) ___ days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, By:

(Signature/Title) _________Guangyang Wang____________

(Print name) MS-0005105 Page 1 of 1 Version 2.0

Type Difference Statement R1C, RX100, RXX1XX (X is a variable, X = A to Z, 0 to 9 or blank) There is no difference in hardware design and RF design of the above models. Different model names are marketing needs. Signature:

Print Name: Guangyang Wang Date: 2023-11-21 Changsha Langyuan Electronics Technology Co., Ltd.

Attestation Statements Not Covered Entity Applicant To: Federal Communications Commission Date: 10-10-2023 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(ii) filing FCC ID: 2BB9P00002

[Changsha Langyuan Electronics Technology Co., Ltd.] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing covered equipment. Sincerely yours, Applicant Signature Printed Name: Guangyang Wang Title: Lab. Manager Address: 15/F, Building B1, NO.11, Guangpu Road, Huangpu District,Guangzhou, Guangdong, P.R. China Tel.: +86-15763789442 Email: guangyang.wang@lango-tech.cn

Attestation Statements Not Covered Equipment To: Federal Communications Commission Date: 10-10-2023 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) filing FCC ID: 2BB9P00002

[Changsha Langyuan Electronics Technology Co., Ltd.] (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Guangyang Wang Title: Lab. Manager Address: 15/F, Building B1, NO.11, Guangpu Road, Huangpu District,Guangzhou, Guangdong, P.R. China Tel.: +86-15763789442 Email: guangyang.wang@lango-tech.cn