2ABC5-E0109Android Tablet

SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Address: Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Bao’an, Shenzhen, China. Product Name: Android Tablet FCC ID: 2ABC5-E0109 Model(s): WF1569T, WF1039T, WF1419T, WF1739T, WF1859T, WF2139T, WF2709T, WF3209T, WF4309T, WF5509T 2.911(d)(5)(i) EquipmentType We, [SHENZHEN ELECTRON TECHNOLOGY CO.,LTD.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Lianqi Wang Date: 12/8/2025 Title and Company name: Manager / SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Address: Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Bao’an, Shenzhen, China. Product Name: Android Tablet FCC ID: 2ABC5-E0109 Model(s): WF1569T, WF1039T, WF1419T, WF1739T, WF1859T, WF2139T, WF2709T, WF3209T, WF4309T, WF5509T 2.911(d)(5)(ii) Applicant filing We, [SHENZHEN ELECTRON TECHNOLOGY CO.,LTD.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: Lianqi Wang Date: 12/8/2025 Title and Company name: Manager / SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Phone: (708) 571-3148 Email: [email protected] Applicant: Company name: SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Product Description: Android Tablet FRN: 0023141955 Grantee Code: 2ABC5 FCC ID: 2ABC5-E0109 Contact Name: Lianqi Wang Address: Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Baoan, Shenzhen, China Telephone No: 86-755-29161269 Email: [email protected] [SHENZHEN ELECTRON TECHNOLOGY CO.,LTD.] certifies that, as of the date of this filing of the application with the TCB, [FCC US Agent, LLC] is our designated US agent for service of process for the above referenced FCC ID. [SHENZHEN ELECTRON TECHNOLOGY CO.,LTD.] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [FCC US Agent, LLC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2025/09/02 Applicant’s Name: Lianqi Wang US Agent’s Name: Tim Payne Title: Manager Title: Manager Signature Signature

SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Family models difference declaration Android Tablet Model: WF1569T , WF1039T, WF1419T, WF1739T, WF1859T, WF2139T, WF2709T, WF3209T, WF4309T, WF5509T Difference declaration: All models have the same circuit and RF module, different product models represent different customers, while others are the same. Regards, Signature Lianqi Wang/ Manager Date/City: 2025-12-08 / Shenzhen Phone: 0755-29161269 Fax: 86-75529161269-607 E-mail: [email protected]

SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2025/12/08 Subject; Request for Confidentiality FCC ID: 2ABC5-E0109 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Desc ription SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES In addi tional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Lianqi Wang Title: Manager Email: [email protected]

Letter of Authorization Company name: SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Address: Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Bao’an, Shenzhen, China. Product Name: Android Tablet FCC ID: 2ABC5-E0109 Model(s): WF1569T, WF1039T, WF1419T, WF1739T, WF1859T, WF2139T, WF2709T, WF3209T, WF4309T, WF5509T We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: Lianqi Wang Date: 2025-12-08 Title: Manager Signature of applicant:

SIZE:49.5*24.5mm 75Cool Gray 8 C PANTONE Cool Gray 8 C Android Tablet Model: WF1569T Input: 12V 2A FCC ID:2ABC5-E0109 Manufacturer:SHENZHEN ELECTRON TECHN OLOGY CO.,LTD. Made in China

FCC ID: 2ABC5-E0109 Maximum Permissible Exposure (MPE) According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method E (V/m) ＝ d GP**30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 * 377 * * 30 D G P From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. BT: Measurement Result Operation Frequency: 2402MHz~2480MHz Power density limited: 1mW/ cm 2 Antenna Type: FPC antenna Antenna gain:2.49dBi; R=20cm mW=10^(dBm/10) antenna gain Numeric=10^(dBi/10)= 10^(2.49/10)=1.77 conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 2402 3.24 2.5±1 3.5 2.239 2.49 1.77 0.0008 1 2441 2.6 2.5±1 3.5 2.239 2.49 1.77 0.0008 1 2480 1.96 2.5±1 3.5 2.239 2.49 1.77 0.0008 1 2402 2.85 2±1 3 1.995 2.49 1.77 0.0007 1 2441 2.15 2±1 3 1.995 2.49 1.77 0.0007 1 2480 1.45 2±1 3 1.995 2.49 1.77 0.0007 1 2402 2.78 2±1 3 1.995 2.49 1.77 0.0007 1 2441 2.17 2±1 3 1.995 2.49 1.77 0.0007 1 2480 1.53 2±1 3 1.995 2.49 1.77 0.0007 1 (mW/cm2 ) (mW/cm2) Antenna Gain DH5 Max tune-up power Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) 2DH5 3DH5 conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 2402 3.46 3±1 4 2.512 2.49 1.77 0.0009 1 2440 2.79 3±1 4 2.512 2.49 1.77 0.0009 1 2480 2.1 3±1 4 2.512 2.49 1.77 0.0009 1 (mW/cm2 ) (mW/cm2) Antenna Gain GFSK(1M ） Max tune-up power Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 2402 3.39 3±1 4 2.512 2.49 1.77 0.0009 1 2440 2.73 3±1 4 2.512 2.49 1.77 0.0009 1 2480 2.03 3±1 4 2.512 2.49 1.77 0.0009 1 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) (mW/cm2 ) (mW/cm2) Antenna Gain GFSK(2M ） Max tune-up power 2.4G WIFI: Operation Frequency: WIFI 802.11b/g/n/ax20: 2412-2462MHz, WIFI 802.11n/ax40:2422-2452MHz Power density limited: 1mW/ cm 2 Antenna Type: FPC antenna Antenna gain1: 2.49dBi R=20cm mW=10^(dBm/10) antenna gain Numeric=10^(dBi/10)= 10^(2.49/10)=1.77 conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 2412 16.02 16±1 17 50.119 2.49 1.77 0.0177 1 2437 16.12 16±1 17 50.119 2.49 1.77 0.0177 1 2462 15.82 16±1 17 50.119 2.49 1.77 0.0177 1 2412 13.29 13±1 14 25.119 2.49 1.77 0.0089 1 2437 13.48 13±1 14 25.119 2.49 1.77 0.0089 1 2462 13.54 13±1 14 25.119 2.49 1.77 0.0089 1 2412 12.13 12±1 13 19.953 2.49 1.77 0.0070 1 2437 12.53 12±1 13 19.953 2.49 1.77 0.0070 1 2462 12.85 12±1 13 19.953 2.49 1.77 0.0070 1 2422 12.33 12±1 13 19.953 2.49 1.77 0.0070 1 2437 12.83 12±1 13 19.953 2.49 1.77 0.0070 1 2452 12.35 12±1 13 19.953 2.49 1.77 0.0070 1 2412 11.34 11±1 12 15.849 2.49 1.77 0.0056 1 2437 11.68 11±1 12 15.849 2.49 1.77 0.0056 1 2462 11.81 11±1 12 15.849 2.49 1.77 0.0056 1 2422 11.21 11±1 12 15.849 2.49 1.77 0.0056 1 2437 11.96 11±1 12 15.849 2.49 1.77 0.0056 1 2452 11.62 11±1 12 15.849 2.49 1.77 0.0056 1 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) 802.11g 802.11n H20 802.11ax2 0 802.11ax4 0 (mW/cm2 ) (mW/cm2) Antenna Gain 802.11b Max tune-up power 802.11n(H T40) 5G WIFI: Operation Frequency: WIFI 802.11a/ac/n/ax20: 5180-5240MHz; 5745-5825MHz; WIFI 802.11ac/n/ax40: 5190-5230MHz; 5755-5795MHz; Power density limited: 1mW/cm Antenna Type: FPC antenna Antenna gain:5.2G:3.42dBi;5.8G:4.96dBi; R=20cm mW=10^(dBm/10) antenna gain Numeric=10^(dBi/10)= 10^(3.42/10)=2.2 antenna gain Numeric=10^(dBi/10)= 10^(4.96/10)=3.13 5.2G conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 5180 12.12 12±1 13 19.953 3.42 2.20 0.0087 1 5200 11.97 12±1 13 19.953 3.42 2.20 0.0087 1 5240 11.98 12±1 13 19.953 3.42 2.20 0.0087 1 5180 11.76 11±1 12 15.849 3.42 2.20 0.0069 1 5200 11.91 11±1 12 15.849 3.42 2.20 0.0069 1 5240 11.78 11±1 12 15.849 3.42 2.20 0.0069 1 5190 11.74 11±1 12 15.849 3.42 2.20 0.0069 1 5230 11.85 11±1 12 15.849 3.42 2.20 0.0069 1 5180 11.89 11±1 12 15.849 3.42 2.20 0.0069 1 5200 11.88 11±1 12 15.849 3.42 2.20 0.0069 1 5240 11.99 11±1 12 15.849 3.42 2.20 0.0069 1 5190 11.81 11±1 12 15.849 3.42 2.20 0.0069 1 5230 11.55 11±1 12 15.849 3.42 2.20 0.0069 1 5180 10.77 11±1 12 15.849 3.42 2.20 0.0069 1 5200 11.76 11±1 12 15.849 3.42 2.20 0.0069 1 5240 11.9 11±1 12 15.849 3.42 2.20 0.0069 1 5190 11.94 11±1 12 15.849 3.42 2.20 0.0069 1 5230 11.84 11±1 12 15.849 3.42 2.20 0.0069 1 802.11ax20 802.11ax40 (mW/cm2 ) (mW/cm2) Antenna Gain 802.11a Max tune-up power Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) 802.11ac20 802.11ac40 802.11n20 802.11n40 5.8G conducted power Evaluation result Power density Limits (dBm) (mW) (dBi) Numeric 5745 13.09 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5785 12.43 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5825 11.74 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5745 12.82 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5785 12.43 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5825 11.68 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5755 12.68 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5795 12.28 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5745 13.01 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5785 12.34 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5825 11.52 12 . 5 ± 1 13.5 22.387 4.96 3.13 0.0140 1 5755 12.6 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5795 12.12 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5745 12.51 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5785 12.37 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5825 11.68 12 ± 1 13 19.953 4.96 3.13 0.0124 1 5755 10.94 10 ± 1 11 12.589 4.96 3.13 0.0078 1 5795 12.7 12 ± 1 13 19.953 4.96 3.13 0.0124 1 (mW/cm2 ) (mW/cm2) Antenna Gain 802.11a Max tune-up power 802.11ax20 802.11ax40 Channel Freq. (MHz) modulation T…

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深圳市亿圣邦科技有限公司第 1 页 深圳市亿圣邦科技有限公司 样品承认书 SPECIFICATIONFORAPPROVAL 公司名称（客户填写）：深圳亿莱顿科技有限公司 物料代码（客户填写）： 规格型号（客户填写）：WF1562 承认日期（客户填写）： 供应商名称（SLK填写）：深圳市亿圣邦科技有限公司 供应商规格型号（SLK填写）：WIFI:SLK-YLD-3116A-R-240I-B 供应商名称:深圳市亿圣邦科技有限公司 供应商地址:深圳市宝安区深圳前湾硬科技产业园C栋101 电话：18025305599电话：18666299104 承认签章 供应商承认（SLK填写栏）深圳市亿莱顿科技有限公司 工程师 品质结构工程师审核批准 罗涛陈揭兴刘才亮 批准 林美财 盖章签署 日期 2023-12-19 日期 批示：□接受□有条件接受 备注（客户填写）： 深圳市亿圣邦科技有限公司第 2 页 WIFIAntenna(3116A) 1.ExplanationofProductnumber: SLK-YLD-3116A-R-240I-B 12345 ProductCode: (1)Customer: YLD:亿莱顿 (2)Project: 3116A:SK-3116A(WIFIantenna) (3)WeldingPosition R:Right (4)CableLength: 240I:240*1.13MM一代端子 (5)CableColor B:Black 2.Features *Stableandreliableinperformances *Compactsize *RoHScompliance 3.Applications *WIFI(802.11a/b/g/n) *Hand-helddeviceswhenWIFI(802.11a/b/g/n)functionsareneeded 深圳市亿圣邦科技有限公司第 3 页 4.Description Holybond’sFPCantennaseriesarespeciallydesignedforWIFI(802.11 a/b/g/n)applications.BasedonHolybond’sproprietarydesignandprocesses, thisFPCantennahasexcellentstabilityandsensitivitytoconsistentlyprovide highsignalreceptionefficiency. 5.ElectricalSpecifications 5-1 CharacteristicsSpecificationsUnit OutlineDimensions 31.09x16.74x0.12 mm CenterFrequency 2400-25005150-5850GHz Bandwidth(under-10dBreturnloss) 130minMHz VSWR 3max 5.2 VSWRS11 深圳市亿圣邦科技有限公司第 4 页 5-3.WIFIAntennaGain/Efficiency/RadiationPatternof3D 深圳市亿圣邦科技有限公司第 5 页 深圳市亿圣邦科技有限公司第 6 页 6.AntennaDimensions(unit:mm) 深圳市亿圣邦科技有限公司第 7 页 7.AntennaPicture WIFI天线

Report No.: N25081303829E Version.1.3 Page 1 of 95 RADIO TEST REPORT FCC ID:2ABC5-E0109 Product: Android Tablet Trade Mark: N/A Model No.: WF1569T Family Model: WF1039T, WF1419T, WF1739T, WF1859T, WF2139T, WF2709T, WF3209T, WF4309T, WF5509T Report No.: N25081303829E Issue Date: Dec. 02, 2025 Prepared for SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Bao’an, Shenzhen, China. Prepared by Shenzhen NTEK Testing Technology Co., Ltd. No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China Te l . 0755-23200050 Website: http://www.ntek.org.cn Report No.: N25081303829E Version.1.3 Page 2 of 95 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULT S ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 NUMBER OF HOPPING CHANNEL ........................................................................................................... 25 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT ........................................................................... 26 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................................ 27 7.6 20DB BANDWIDTH TEST .......................................................................................................................... 29 7.7 PEAK OUTPUT POWER .............................................................................................................................. 30 7.8 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 31 7.9 SPURIOUS RF CONDUCTED EMISSION .................................................................................................. 32 7.10 ANTENNA APPLICATION .......................................................................................................................... 33 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS ......................................... 34 8 TEST RESULTS ................................................................................................................................................... 35 8.1 DWELL TIME ................................................................................................................................................... 35 8.2 MAXIMUM CONDUCTED OUTPUT POWER ....................................................................................................... 45 8.3 -20DB BANDWIDTH ........................................................................................................................................ 51 8.4 OCCUPIED CHANNEL BANDWIDTH .................................................................................................................. 57 8.5 CARRIER FREQUENCIES SE PA R AT I O N .............................................................................................................. 63 8.6 NUMBER OF HOPPING CHANNEL ..................................................................................................................... 69 8.7 BAND EDGE .................................................................................................................................................... 72 8.8 BAND EDGE(HOPPING) ................................................................................................................................... 79 8.9 CONDUCTED RF SPURIOUS EMISSION ............................................................................................................. 86 Report No.: N25081303829E Version.1.3 Page 3 of 95 1 TEST RESULT CERTIFICATION Applicant’s name .........................: SHENZHEN ELECTRON TECHNOLOGY CO.,LTD. Address ........................................: Bld.2, Yingfeng Industrial Zone, Tantou Community, Songgang Street, Bao’an, Shenzhen, China. Manufacturer's …

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