2AXK8-X502Wireless Earbuds

DongguanBaolifengElectronicTechnologyCo.,Ltd (4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China) AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Dec.9,2025 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2AXK8-X502 DongguanBaolifengElectronicTechnologyCo.,Ltd(“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§ 1.50002ofreferencechapter,asanentityproducing“covered”communicationequipment.The equipmentforwhichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideo surveillanceequipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibited fromreceivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:BinbiaoLiang Title:Manager Address:4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China Email:[email protected]

DongguanBaolifengElectronicTechnologyCo.,Ltd (4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China) 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Dec.9,2025 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2AXK8-X502 ProductName:WirelessEarbuds Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:BinbiaoLiang Title:Manager Address:4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China Tel.:+8615099927722 Email:[email protected] DongguanBaolifengElectronicTechnologyCo.,Ltd (4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China) 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck SBOM(SoftwareBillofMaterials)[ForDeviceisnotInherentcompliance] SectionComponentNameVersionSupplier 1 2 3

DongguanBaolifengElectronicTechnologyCo.,Ltd (4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China) U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:December9,2025 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:2AXK8-X502 [DongguanBaolifengElectronicTechnologyCo.,Ltd](“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,[GOLDENVICTORYINTERNATIONALTRADINGCOLTD](“theagent”) isourdesignatedU.S.agentforserviceofprocessfortheabovereferenceFCCID.Theapplicant acceptstomaintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyear aftereitherthegranteehaspermanentlyterminatedallmarketingandimportationoftheapplicable equipmentwithintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater.Theapplicantfurtheracknowledgesitisour responsibilitytoinformtheFCCwhenevertheagentinformationchanges. [GOLDENVICTORYINTERNATIONALTRADINGCOLTD]("theagent)understanditistheagent's obligationtoacceptserviceofprocessintheUnitedStatesformattersrelatedtotheapplicable equipment,andatthephysicalU.S.addressandemailaddress. DesignatedU.S.Agent CompanyName:GOLDENVICTORYINTERNATIONALTRADINGCOLTD FRN:0036377570 Address:11016THSTREETSUITE1400 DENVER,CO80202UnitedStates Signature: ContactPerson:LeonHowar ContactPerson:Manager Tel:(337)255-0461Email: [email protected] Applicant CompanyName:DongguanBaolifengElectronicTechnologyCo.,Ltd FRN:0029986940 Address:4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown, DongguanCity,China Signature: ContactPerson:BinbiaoLiang ContactPerson:Manager Tel:+8615099927722Email:[email protected]

DongguanBaolifengElectronicTechnologyCo.,Ltd ( 4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China ) Date:December9,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2AXK8-X502 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics  OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired. UserManual  InternalPhotos TestSetupPhotos Sincerely, (Signature) Title:Manager Address:4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China Tel.:+8615099927722 Email:[email protected]

DongguanBaolifengElectronicTechnologyCo.,Ltd ( 4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,DongguanCity,China ) Date:December9,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2AXK8-X502 I,theundersigned,herebyauthorize(ShenzhenPSITestingCo.,Ltd.)toactonourbehalfinallmatters relatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenPSITestingCo.,Ltd.)shallhavethesameeffectasourownandI acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(DongguanBaolifeng ElectronicTechnologyCo.,Ltd). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite) Title:Manager Tel:+8615099927722 Fax:+8615099927722 Email:[email protected]

Page1of5ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China AppendixIIexternalphotos FCCID:2AXK8-X502 Page2of5ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Page3of5ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Page4of5ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Page5of5ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China ------End------

Dongguan baolifeng Electronic Technology Co., Ltd Labeldeclaration Regards Sincerely Client’s signature: Client’s name / title :Binbiao Liang/Manager Contact information / address:4/F, Mingxin science Park,138 Qiqiao Road, Product description:Wireless Earbuds Model name:X502 FCC ID:2AXK8-X502 The measurement of remote control: Length (30mm) Width(25mm)High(15mm).The remote control are too small and irregularly shaped to print labels, so the labels are included in the instruction manual and on the outer packaging. Qishi Town, Dongguan City, China

FCCID:2AXK8-X502 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China RFExposureevaluation Accordingto447498D01GeneralRFExposureGuidancev06andpart2.1093 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison BR: Worsecaseoutputpowerisasbelow:[2402MHz:1.8dBm] Maximumoutputpoweris1.8dBm(1.51mW). (1.51mW/5mm)·[√2.402(GHz)]=0.468<3.0for1-gSAR ThenSARevaluationisnotrequired

SymbolsLWTA Dimensions 1.60±0.200.80±0.200.80±0.200.30±0.10 NumberTerminalName ① INPUT ② NC Dimensions(Unit: mm) w ①② ( Side View) ( Bottom View) ( Top View) A T L Shenzhen HanyangAntenna Design Co. Ltd. 1.Surfacemountedelementwithasmalldimensionof1.6×0.8×0.8mmmeetfutureminiaturizationtrend. 2.EmbeddedandLTCC(lowtemperatureco-firedceramic)technologyisabletointegratewithsystem 1. Bluetooth 2. Dual-band WLAN 3. ISM and UWB 4. Antenna type: chip antenna design aswellasbeatifyingthehousingoffinalproduct. 3.Miniaturization,wideband,highstability,lowESR,andlowtolerance. 4.Dual-bandresonancesinthedominantandharmonicmodesenablesmultibandoperations. 5.Novelground-radiationtechniqueenablesradiationfromboththeantennaandthegroundplane. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 Features: Applications: RF chip ANT chipANT pattern PCB ground Mode-2 Mode-1 P/N: HY160808 SRF09 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page1 Layout-1 (3.5mm×6.5mm) ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page2 1.5 1 3.5 2.5 0201 footprint (E1) 0201 footprint (E2) 0603 footprint (ANT) RF Input/Output 6.5 0.5 0.5 0.5 1.5 3.5 2.5 0201 footprint (E3) 6.5 Top layer: Bottom layer: 0.5 0.5 RF chip E1 E3 E2 ANT Equivalentcircuit: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 2.5 0201 footprint 0603 footprint 10 0.5 1.5 0201 footprint 1.5 3 2.5 10 1.5 2 0.5 0201 footprint Layout-2 (1.5mm×10mm) Top layer: Bottom layer: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page3 RF Input/Output ElectricalCharacteristics: CharacteristicCurves: FeatureSpecification 1 Centralfrequency2.45GHz 2 Bandwidth>150MHz 3 Peak gain2.78dBi 4 VSWR<2 5 PolarizationLinear 6 AzimuthbeamwidthOmnidirectional 7 Impedance50Ω P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page5 RadiationPattern: Y-ZPlaneX-ZPlane coordinates： 深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page5 RadiationPerformance: P/N: HY160808 SRF07, HY160808 SRF08,HY160808 SRF09 深圳汉阳天线设计有限公司 Shenzhen Hanyang Antenna Design Co. Ltd. X-YPlane Frequency 2400MHz2450MHz2500MHz Avg.gain-1.92-1.35-1.56 Peakgain1.792.782.66 Efficiency74.5580.2576.98 Temperature：40±2°C Humidity：90~95%RH Duration：500h Recovery conditions：Room temperature Recovery Time：24h (Class1) or 48h (Class2) Test Temperature Operating Temperature Temperature RelativeHumidity 25°C±5°C -25°C~+125°C 5~40°C 20~70% Notenoughsolder Weak holding forcemay cause bad connection between the chipandPCB. RecommendedSolderingAmounts The optimal solder fillet amounts forre-flowsoldering 天线厚度 以下 The optimal solder fillet amounts for wavesoldering DependabilityTest Too much solder Cracks tend to occur due to large stress. MoistureProof OptimumSolderAmount forReflowSoldering Solderability At least 95% of the terminal electrode is covered by newsolder. Preheating conditions:80 to 120°C;10~30s. Solder Tem p e r at u r e :2 3 5 ±5°CDuration:2 ±0.5s , Solder Tempe r ature:24 5±5°CDu rat ion:2±0.5s P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page6 10±1S AppliedForce:5NDuration:10±1S Preheating conditions: up-category temperature, 1h Recovery time:24±1h InitialMeasurement Cycling Times: 5 times, 1 cycle, 4steps: Preheating80to120°C;10~30s.SolderTemperature:235±5°C;Duration:2±0.5s;SolderTemperature:245±5°C Duration:2±0.5s;Preheating100to200°C;10±2min. SolderTemperature:265±5°C;Duration:10±1s Cleanthecapacitorwithsolventandexamineitwitha10X(min.)microscope. RecoveryTime:24±2h Recoverycondition:Roomtemperature Test Board: Al 2 O 3 orPCBWarp:1mm Speed:0.5mm/sec. Unit:mm Themeasurementshouldbemadewiththeboardinthe bendingposition. Resistance to Soldering Heat ResistancetoFlexureofSubstrate Temperature CycleTest P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaD…

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ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.comPage1of51 Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China FCCTESTREPORT FCCID:2AXK8-X502 OnBehalfof DongguanBaolifengElectronicTechnologyCo.,Ltd WirelessEarbuds ModelNo.:X502 Preparedfor:DongguanBaolifengElectronicTechnologyCo.,Ltd Address: 4/F,MingxinsciencePark,138QiqiaoRoad,QishiTown,Dongguan City,China PreparedBy:ShenzhenPSITestingCo.,Ltd. Address: 1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad, ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China ReportNumber:psi2509227-C01-R01 DateofReceipt:Sept.16,2025 DateofTest:Sept.16,2025toOct.13,2025 DateofReport:Oct.13,2025 VersionNumber:V0 Page2of51ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,ShajingSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China TABLEOFCONTENTS DescriptionPage 1.SummaryOfStandardsAndResults....................................................................6 1.1.DescriptionofStandardsandResults.............................................................6 2.GeneralInformation...............................................................................................7 2.1.DescriptionofDevice(EUT)............................................................................7 2.2.AccessoriesofDevice(EUT)...........................................................................8 2.3.TestedSupportingSystemDetails...................................................................8 2.4.BlockDiagramofconnectionbetweenEUTandsimulators............................8 2.5.TestModeDescription.....................................................................................9 2.6.Softwaretestversionandpowersettinginformation.......................................9 2.7.TestConditions..............................................................................................10 2.8.TestFacility....................................................................................................10 2.9.MeasurementUncertainty.............................................................................10 2.10.TestEquipmentList.....................................................................................11 3.MaximumPeakOutputPower.............................................................................12 3.1.Limit...............................................................................................................12 3.2.TestProcedure..............................................................................................12 3.3.TestSetup.....................................................................................................12 3.4.TestResult.....................................................................................................12 4.Bandwidth.............................................................................................................13 4.1.Limit...............................................................................................................13 4.2.TestProcedure..............................................................................................13 4.3.TestSetup.....................................................................................................13 4.4.TestResult.....................................................................................................13 5.CarrierFrequencySeparation.............................................................................18 5.1.Limit...............................................................................................................18 5.2.TestProcedure..............................................................................................18 5.3.TestSetup.....................................................................................................18 5.4.TestResult.....................................................................................................18 6.NumberOfHoppingChannel..............................................................................21 6.1.Limit...............................................................................................................21 6.2.TestProcedure..............................................................................................21 6.3.TestSetup.....................................................................................................21 6.4.TestResult.....................................................................................................21 7.DwellTime.............................................................................................................24 7.1.Testlimit........................................................................................................24 7.2.TestProcedure..............................................................................................24 7.3.TestSetup.....................................................................................................24 7.4.TestResult.....................................................................................................24 8.Out-of-bandEmissions........................................................................................26 8.1.TestLimits.....................................................................................................26 8.2.TestProcedure..............................................................................................26 8.3.TestSetup.....................................................................................................26 Page3of51ReportNo.:psi2509227-C01-R01 ShenzhenPSITestingCo.,Ltd.Tel:0755-23011775|E-mail:[email protected]|http://www.psi-lab.com Add:1-2/F.,Building5,YudafuIndustrialPark,No.10,XingyeWestRoad,S…

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