FCC ID: 2BD7W-YX01 Bluetooth headset

Shenzhen Yingxin Technology Co., LTD

(December 27, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature:

Name: Yilong Wang Title: manager

(Shenzhen Yingxin Technology Co., LTD)

(December 27, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BD7W-YX01)

[Shenzhen Yingxin 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,

(Applicant signature)

(Applicant printed name) Yilong Wang

(Shenzhen Yingxin Technology Co., LTD)

(December 27, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BD7W-YX01)

[Shenzhen Yingxin 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 an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) Yilong Wang

Shenzhen Yingxin Technology Co., LTD

(December 27, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Bluetooth headset / YX-01, YX-02, YX-

03, YX-05, YX-06, YX-07, YX-08, YX-09, YX-10, YX-11, YX-12, YX-13, YX-15, YX-16, YX-17, YX-18, YX-19, YX-20, FK8, BY-8 / FCC ID: 2BD7W-YX01) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No No No NOTE 1 NOTE 1 No No Short-Term Confidentiality NOTE 2 No No No No No No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature:

Name: Yilong Wang Title: manager

Shenzhen Yingxin Technology Co., LTD Model Difference DataDecember 27, 2023 Product description: Bluetooth headset Model name: YX-01, YX-02, YX-03, YX-05, YX-06, YX-07, YX-08, YX-09, YX-

10, YX-11, YX-12, YX-13, YX-15, YX-16, YX-17, YX-18, YX-19, YX-20, FK8, BY-8 Trade Name: N/A FCC ID: 2BD7W-YX01 All the model are the same circuit and RF module, except model names . Regards Sincerely Clients signature :

Clients name / title : Yilong Wangmanager Contact information / address1B83, AB, Huafa North Road, Futian District, Shenzhen, China

U S Agent Agreement Part A/F Name (4 #n) : Shenzhen Yingxin Technology Co., LTD Add (sh) : 1B83, AB, Huafa North Road, Futian District, Shenzhen Contact Person (IKRA) :

Tel (GRAB) :

E-mail (ii 4ff) : 909594660@qq. com 0034640813 FCC IDS: 2BD7W-YX01 Party B/Z7i Name (44 #&) : GRZAN GROUP_INC. 5 8825 53 AVE ELMHURST, NY 11373 Andy Smith

| info@grzan-ar. com

+1 (332) 201-5192 0034499368 Add (Sth ht):

Contact Person(ERKRA):

E-mail (8 #A) :

Tel (RABE):

Party A hereby appoints Party B as the authorized US Agent for their products, Party B accepts the appointment to be the authorized US Agent for Party A in the market of US, Both parties enter this agreement as follow, medical devices, Cosmetics (chemical products)ropeways, civilian explosives, hot water boilers and lifts are not included. PAE LAN ORAL, CHRE TE, MITE PAP, RABI gpe, (etka ULAR Ph), Zee, RAMEE, SAKAI AST BEML YX-01, YX-02, YX-03, YX-05, YX-06, YX-07, YX-08, YX-09, YX-10, YX-11, YX-12, YX-13, YX-15, YX-16, YX-17, Fcc ID YX-18, YX-19, YX-20, FK8, BY-8 WFIESL Bluetooth headset Obligations and Liabilities of PartyA AARAALS 1. Party A assures to provide their updated product list of all products which are sold in United States market to Party B. FD BOER ZTE ERE TAY Pha 2. Hfthere are any changes ofproducts and update of technical file, Party A shall notify Party B withchange Notification in electronic copy as soon as possible. Party A shall send relevantinformation to Party B's email listed as above within one weekuponchanging information. PRUE, RACMAEH, PHRRERM Sree -ACAUE FMEA ABR BAIZHULEF MA. 3. Assisting the Party B to respond the questions conceming Party A's products that are imported or offered forimportinto the United States. WZ Fs BT KEL HE BE A PT ME A 4. Party A shall be responsible for any business dispute such as claim for compensation caused by medical accident after sale, party B shall handle the dispute in accordance withthe authorization of party AAll the expenses which should be confirmed by party A occurred during the party B's handling of the accident shall be bone by partyA. AA VM AGERE ETE TURRALARSWV ZUR. CHRBPHHRR, PPAR ENGR PLAX AMARRA PA Pi. 5.Party A should appoint one persons as the primacy linkman who connectwith Party B and deal withthe normal daily grind according to this agreement Information of both Parties' linkman should be written in Page one. The information delivered to the primacy linkman who connect with Party A by Party B shall be deemed as delivery to Party A and the instruction provided by the primacy linkman who connect with Party A shall be deemed as the instruction from Party A. AREA, (EAP. CRAMA-KHA, ERRRAZSCARAMA. READWLRRMEE HAMABLE. MHKBAMRAARCREADUMNA-R. CHEAP RSBAM fa SUE KAP, PRRBAB MARE ee 6.Party B is released by Party A of any liability relating to the products manufactured by PartyA. AR, ZAR AEP Ar iA RAE A BE Party A will be fully responsible for the performance of its products and will hold Party B harmless against any liability claim arising from the use of the products manufactured by Party A. FA WH RRS MAE, FEM RLARSRAPRAEF HS BRERA PP ENE AER TARR. 7 Party A cannot provide the required technical file to Party B within30 days after approval of,this agreement will be terminated automatically, Party A should take on any aftereffect by itself.The technical files should be the electronic copy(PDF/WORD/JPGiNision). MRPAEVESRMAES SHIRA, GRABBER LABGAERH ARRAN, FGF ik, MA TARE. SATA PDF/WORD/JPG/ MESt Ho LER FP Obligations and Liabilities of Party B ZARA LA 1.Party B shall appoint one persons as the primacy linkman whose responsibilityis to connect with PartyA and deal withthe normal daily grind according to this agreement. The information of both Parties'linkman was written in first page of this contract. ZARBRE-A, (EAR. CMAHB-RHA, ERRRAS RHE, MEAD AAME THA 4 ABLE. MARKRANRAANCREAD WN AK. 2.arty B shallkeep all technical files and information of Party A's in confidentiality. ZAR PARA NSARM RE 3.Party B shall not be responsible for the authenticity of the documents provided by Party A. If the documents provided by Party A are false, all responsibilities shall be bome by itself. ZAR PARANA RT. PREC MA, GEA TARE. 4. In case of any dispute between Party A and the customer,Party B shall not provide any legal advice-PartyB shall also not provide suggestions to Party A on the design, production,packaging, labeling, storagejnstallation, maintenance and preservation ofproduct archives, as well as the quality system management and control in compliance with the requirements. WREASSPEEMABLRES, CAME. CATE ma, AEP, OR, oe, GEE BER, HEM RMSE REE SE ES Dy DERE IE ES EE TE P BE Xw 5 Party B has no obligation to assist Party A in applying for the license and formalities for the importofits products into the United States. ZARA NE OP Ba st BIR AEE Contract Language A[aif3 This agreementexists in English and Chinese language. The English version is solely for information purposes. The Parties agree that the Chinese version of this agreement alone shall prevail with legally binding effect. AANA EAA HEAL, AULA CAME. Signature (4):

Company Stamp (243) :

Date (A#f) :2023. 12. 27