China latest patents query

The latest invention patents collect the data information of China invention patents from 2000 to 2024, typesetting according to the date of patent publication, including patent number, application date, invention Bibliographic data, abstracts, and specification data of people are convenient for scientific researchers to quickly browse and search for patents.

Voice acquisition method and system based on voice recognition

ActiveCN106297767AImprove recognition rateGood Signal Input BasicsSpeech recognitionAnalog signalSpeech sound

Owner:ZHUHAI JIELI TECH

Power transmission frame-based environment monitoring method

ActiveCN105067771AMaterial analysisEnvironmental resistanceFrame based

Owner:STATE GRID ZHEJIANG LANXI POWER SUPPLY +3

Nanowire cold cathode electron source array with self-aligned focusing structure and manufacturing method thereof

ActiveCN106158551ADoes not affect conductivityFix layout issuesDischarge tube/lamp detailsCold cathode manufactureNanowireElectron source

Owner:SUN YAT SEN UNIV

Self-supporting high-density copper-cobalt-selenium nanotube electrode and preparation method thereof

ActiveCN111321424AHigh catalytic activityFacilitate transmissionMaterial nanotechnologyElectrode shape/formsNanowireElectrolysis

Owner:TAIYUAN UNIV OF TECH

Near-infrared hyperspectral optical imaging device

ActiveCN103995342AImprove image qualitySimple structureOptical elementsInfraredAcousto-optics

Owner:武汉华中旷腾光学科技有限公司

Detector for race position of hub bearing outer ring

ActiveCN104776779AQuick measurementAccurate measurementMechanical measuring arrangementsLocation detectionSteel ball

Owner:HUBEI NEW TORCH SCIENCE & TECHNOLOGY CO LTD

Data transmission method and device, electronic equipment and storage medium

ActiveCN110719598AImprove transmission efficiencyReduce transmission efficiencyNetwork traffic/resource managementTransmissionTransmission time delayNetwork communication

Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD

Biomass boiler flue gas desulfurization device and process

ActiveCN102357341AGuaranteed Active ContactEfficient oxidationDispersed particle separationPower stationFlue gas

Owner:SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP

Light-emitting diode chip packaging structure by using deposition method and manufacturing method thereof

ActiveCN101645477AAvoid Cured SituationsReduce heating and baking timeSolid-state devicesSemiconductor/solid-state device manufacturingRoom temperatureEngineering

Owner:HARVATEK CORPORATION

Monoclonal antibody against novel coronaviruses and application of monoclonal antibody

ActiveCN113354730AStrong neutralizing activityClinical application value of prevention and treatmentImmunoglobulins against virusesAntiviralsInfection inducedMolecular virology

Owner:THE THIRD PEOPLES HOSPITAL OF SHENZHEN +1

Alkynylated imidazo [1, 5-a] indole compound and preparation method thereof

ActiveCN113480544AImprove toleranceHigh chemoselectivityOrganic chemistryMeth-Ptru catalyst

Owner:CHENGDU UNIV

Method for fixing hybrid double-difference ambiguity between BDS and GPS

ActiveCN105891864AControl lengthRemove restrictionsSatellite radio beaconingDouble differenceEstimation methods

Owner:LIAONING TECHNICAL UNIVERSITY

A method for monitoring and early warning the rock burst risk of a coal seam bifurcation merging area

ActiveCN109886600ASimple and fast operationLow costMining devicesResourcesShear stressIntegrated processing

Owner:SHAOXING UNIVERSITY

Structure for reversely scrolling flexible screen of electronic equipment

ActiveCN111045484AOvercome the defects of being soft and difficult to operateAvoid pulling forceDetails for portable computersMechanical engineeringFolded structure

Owner:曹磊

Welding equipment

ActiveCN111408839AEasy to useLaser beam welding apparatusEngineeringLaser soldering

Owner:HANS LASER TECH IND GRP CO LTD

Fixing structure for small metal piece in injection mold

ActiveCN107599303AAvoid stampingReduce mold repair costsCoatingsPiece UnitMaterials science

Owner:青岛海士豪塑胶有限公司

Software-fix-orientated individualized task recommendation method based on co-correlativity topic model

ActiveCN104461558AImprove efficiencyImprove accuracySpecific program execution arrangementsPersonalizationSoftware engineering

Owner:YANGZHOU UNIV

Technological process and apparatus of serial gas stripping inner circulation reactor

InactiveCN1772652AHigh removal rateIncrease the rate of nitrification reactionSustainable biological treatmentBiological water/sewage treatmentSludgeSewage

Owner:BEIJING UNIV OF TECH

Liquid crystal display panel and its test method

ActiveCN101464575AFast testImprove reliabilityElectrical testingNon-linear opticsLiquid-crystal displayEngineering

Owner:SHENZHEN SUCCESS ELECTRONICS LTD

Double-layer chassis frame structure of light-weight middle-sized bus

InactiveCN103587581AFlat surfaceImprove mechanical propertiesUnderstructuresVehicle frameEmbedded system

Owner:INST OF DONGGUAN SUN YAT SEN UNIV +1

SIS (small intestinal submucosa) medicine carrying patch as well as preparation method and application thereof

ActiveCN105412986AEasy to prepareChemically stableProsthesisFiberDrug release

Owner:NINGBO UNIV

Purifying and reusing device of bathing waste water

ActiveCN104386869AImprove water qualityKeep oxygenatedMultistage water/sewage treatmentElectrolysisWater quality

Owner:陶昱明

Clothes hanger convenient for airing

InactiveCN105640273AShorten the lengthIncrease the lengthApparel holdersEngineeringClothes hanger

Owner:TONGXIANG XINDUN CLOTHING CO LTD

Software evaluation method, device and equipment

PendingCN110618937ASolve the problem of high evaluation costLow costSoftware testing/debuggingSoftware EvaluationSoftware engineering

Owner:深圳市新系区块链技术有限公司

Mixed sampling and minimum shedding load calculation-based reliability calculation method and platform

InactiveCN106096827AImprove evaluation efficiencyReduce dimensionalityResourcesEvaluation resultElectric power system

Owner:STATE GRID SHANDONG ELECTRIC POWER +1

Blueberry screening device

InactiveCN105396788AImprove screening efficiencyImprove cleaning efficiencyFood treatmentGradingAgricultural engineeringMechanical screening

Owner:重庆金徽林业发展有限公司

Preparation method and application of targeted mercuric sulfide nanoparticle medicine

ActiveCN113304171ASimple processProcess conditions are easy to controlHeavy metal active ingredientsAerosol deliveryNanoparticlePharmaceutical drug

Owner:INNER MONGOLIA MEDICAL UNIV

Rotary shaft non-orthogonal angle calibration method of double-shaft rotation inertial navigation system

InactiveCN108507592AEasy CalibrationMeeting the needs of engineering practiceMeasurement devicesTransfer matrixDual axis

Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Micro-nano satellite in-orbit autonomous rendezvous control method and computer equipment

PendingCN113602535AImprove docking control accuracyAvoid calculationCosmonautic vehiclesCosmonautic component separationRelative orbitClassical mechanics

Owner:BEIHANG UNIV

Advance timbering device of dig-anchor-integrated comprehensive mining machine

ActiveCN107060857ADo not block the line of sightCompact structureDerricks/mastsSlitting machinesMachineCantilever

Owner:沈阳重机重矿机械设备制造有限公司

Method for preparing mandarin fish bait from crucian

InactiveCN106173553AFull of nutritionNo pollution in the processClimate change adaptationAnimal feeding stuffCayenne pepperPorphyra

Owner:滁州市南谯区长江水产良种繁育场

Winding needle

PendingCN112786942AAchieve clampingAchieve releasePrimary cell manufactureAssembling battery machinesEngineeringRelative motion

Owner:WUXI LEAD INTELLIGENT EQUIP CO LTD

Bearing machining equipment with waste material collection function

InactiveCN108453296AEasy to transport awayAvoid injuryMilling equipment detailsMaintainance and safety accessoriesRotary stageResist

Owner:YANCHENG SANCHUAN BEARING MFG

Restless leg syndrome or overactive nerve treatment

ActiveCN110603073ASpinal electrodesInertial sensorsFemoral nervePhysical therapy

Owner:NOCTRIX HEALTH INC

Integrated digital intelligent terminal of distribution transformer

PendingCN110022001AAvoid damageAvoid power outagesCircuit arrangementsElectrical testingDistribution transformerLow voltage

Owner:TBEA INTELLIGENT ELECTRIC CO LTD +1

Conjugated zinc linoleate preparation and preparation method thereof

InactiveCN110897165AHigh purityUniform responseOrganic active ingredientsMetabolism disorderCombinatorial chemistryConjugated linoleic acid

Owner:常州凯康生物科技有限公司

Unit series compensation power transmission system

PendingCN110492491AReduce negative impactLess investmentReactive power adjustment/elimination/compensationReactive power compensationCapacitanceSeries compensation

Owner:NORTH CHINA POWER ENG

Information acquisition method, processor and communication apparatus

InactiveCN108733482ASolve the problem of high occupancyResource allocationRegister arrangementsOccupancy rateComputer module

Owner:HUAWEI TECH CO LTD

User contribution-based layered cash-back method and layered cash-back system

PendingCN111242655AStimulate and lead transformationAchieve the ultimate goalMarket predictionsMarket data gatheringData informationBehavioral data

Owner:上海花事电子商务有限公司

Multifunctional single plate management system

InactiveCN101197696AEasy to implementNo complex association processingData switching networksSelection arrangementsElectricitySingle plate

Owner:ZTE CORP

Injection molding machine

InactiveCN104339555ASimple structureReduce manufacturing costInjection molding machineMechanical engineering

Owner:昆山慧星行机械设计有限公司

Tread hammer pressing ring pressing plate

InactiveCN110660374ARealize tightness adjustmentLimited rotationPercussion musical instrumentsScrew threadIndustrial engineering

Owner:TIANJIN JINBAO MUSICAL INSTR

A scanning method and system for associating a scanning body to a next link

InactiveCN109426843AImprove recognition efficiencySave human effortCo-operative working arrangementsLogistics managementComputer graphics (images)

Owner:SF EXPRESS

Photovoltaic hybrid energy storage control method considering prediction error compensation and fluctuation stabilization

ActiveCN112928769AClear division of laborPrevent overcharge and overdischargeSingle network parallel feeding arrangementsEnergy storageControl engineeringPower grid

Owner:XINJIANG UNIVERSITY +1

Non-isolated voltage conversion circuit and method and electronic equipment

PendingCN113839571AAc-dc conversionHemt circuitsCurrent voltage

Owner:SHENZHEN KIWI MICROELECTRONICS CO LTD

Suction nozzle for vacuum cleaner

InactiveCN102770057AIncrease the amount of vibrationStrong vibrationCarpet cleanersFloor cleanersPunchingReciprocating motion

Owner:LG ELECTRONICS INC

Engine pressure reducing device and engine thereof

ActiveCN113669129AEasy to startIngenious designValve arrangementsMachines/enginesEngineeringCam

Owner:五羊—本田摩托(广州)有限公司

Large-caliber steel-plastic reinforced composite pipe section and reinforced composite pipe forming process

ActiveCN103615606AEffective moldingEnergy saving in molding processFlanged jointsRigid pipesEconomic benefitsHook wire

Owner:葛介昌

Preparation method and application of graphene oxide-cellulose composite hydrogel

ActiveCN106188576AImprove adsorption capacityImprove mechanical propertiesOther chemical processesAlkali metal oxides/hydroxidesCellulose4-methylmorpholine N-oxide

Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Electronic product screw locking detection device and detection method thereof

PendingCN113560205ASortingElectric machineryEngineering

Owner:苏州咖为智能科技有限公司

Net-hanging-free plastering installation construction method for autoclaved aerated concrete batten partition wall

PendingCN114525932AIncrease surface stiffnessExtended service lifeCovering/liningsWallsGlass fiberFiber

Owner:陕西建工鼎盛装饰有限公司

Vehicle collision early warning device based on image analysis and recognition

ActiveCN114559932AComprehensive testing dataImprove the anti-collision effectControl devicesImaging analysisSimulation

Owner:安徽尚视信息科技有限公司

Traditional Chinese medicine for treating endocarditis

InactiveCN105748845ADefinite curative effectNo side effectsUnknown materialsAntiinfectivesBlumeaGlochidion

Owner:魏忠

Three-dimensional parking garage unilateral track device

PendingCN113846881APlay an auxiliary role in stabilizingParkingsEngineeringControl theory

Owner:深圳市立轩停车技术有限公司

Existing line settlement control system and method based on slip casting technology

InactiveCN105259942AEasy to controlEasy to manageFluid pressure control using electric meansControl systemMonitoring system

Owner:CHINA UNIV OF MINING & TECH (BEIJING) +1

Distortion correcting method and device for plane body

InactiveCN1246099CIncrease pressureImprove work efficiencySemiconductor/solid-state device manufacturingRecord information storageTarget surfaceEngineering

Owner:MINEBEA CO LTD

Light bus instrument DPF regeneration alarm system and method

PendingCN114724345AReduce clogging failure rateEmission reductionTelemetry/telecontrol selection arrangementsInternal combustion piston enginesDriver/operatorDisplay device

Owner:JIANGLING MOTORS

Packaging and jointing-supporting work method of finished products of photovoltaic modules

InactiveCN107585370AQuality assuranceEasy to packPackaging automatic controlShock-sensitive articlesElectricityCarton

Owner:HEFEI LIUMING NEW ENERGY TECH

Preparation technology of potato rice wine

InactiveCN106318773ANot easy to oxidative browningReduce precipitationAlcoholic beverage preparationFlavorMental state

Owner:吴志明

Linear motor capable of positioning load

InactiveCN102361387ALight in massSmall movement massPropulsion systemsElectric machineHigh acceleration

Owner:AKRIBIS SYST SHANGHAI

Combustor and gas combustion method

PendingCN106838900ASimplified volumeEmission reductionGaseous fuel burnerThermodynamicsCombustor

Owner:BAY ENVIRONMENTAL TECH BEIJING

Haze removal method for automatic driving, haze removal device and computer-readable storage medium

ActiveCN110382081BEfficient purificationGood for healthUsing liquid separation agentRoad cleaningSuspended particlesAir purifiers

Owner:LAUNCH TECH CO LTD

Network intercommunication method, network entity and control entity

InactiveCN107135132AAvoid the problems caused by step-by-step queryNetworks interconnectionDomain nameRoute search

Owner:CHINA MOBILE COMM GRP CO LTD

Preparation method of light graphene nylon composite

InactiveCN108276768AImprove thermal conductivityImprove wear resistanceHeat-exchange elementsHeat conductingGraphene

Owner:HUNAN GUOSHENG GRAPHITE TECH CO LTD

Novel slag raising machine

PendingCN113483345AFull recoveryHigh recovery rateCharge manipulationIncreasing energy efficiencyMetallurgical slagProcess engineering

Owner:河北思莱格环境科技有限公司

Grid-connected control method and grid-connected control device

PendingCN113346473ADc source parallel operationDc circuit to reduce harmonics/ripplesElectric power systemControl engineering

Owner:SHANGHAI SIGRINER STEP ELECTRIC

Reutilization method of waste liquid obtained by extracting tigogenin from sisal hemp

ActiveCN107021580AEfficient removalGood chromaWater contaminantsTreatment involving filtrationLiquid wasteChemical reaction

Owner:温岭市旗亮鞋业有限公司

Stepping self-moving temporary support equipment and support method thereof

PendingCN113685217ARealize stepping self-movingIncrease the support areaMine roof supportsCoalIndustrial engineering

Owner:鄂尔多斯市绿矿技术服务有限公司

Weather-resistant trampoline surrounding net

InactiveCN109876354AEnsure safetyGuaranteed weather resistanceSpring boardsTrampolinesWeather resistanceEngineering

Owner:JIANGSU QINGSHI TECH

Multi-zone type biological natural gas generating device

PendingCN113773945AEasy to produceBioreactor/fermenter combinationsBiological substance pretreatmentsInfraredThermodynamics

Owner:柳州东鑫能源科技有限公司

Series-connection battery system with automatic bypass function

InactiveCN102195327APrevent crashBatteries circuit arrangementsEmergency protective circuit arrangementsElectrical batteryEngineering

Owner:JOY RIDE TECH +1

Disease-resistant rice planting method

InactiveCN109511305AIncrease productionStrong disease resistanceSeed and root treatmentFertilising methodsBiotechnologyPesticide residue

Owner:沈阳市北星水稻研究所

Array substrate and manufacturing method thereof, and display device

PendingCN111061079AImprove qualityAvoid overlappingNon-linear opticsGraphicsDisplay device

Owner:BOE TECH GRP CO LTD

Indoor cement pit artificial propagation method for scatophagus arguses

ActiveCN107549064ASolve the technical problems of stable water qualityHigh degree of factoryClimate change adaptationPisciculture and aquariaArtificial inseminationScatophagus argus

Owner:SHANGHAI FISHERIES RES INST

Ultraviolet blocking master batch of polyolefin high-transmittance film and preparation method of ultraviolet barrier master batch

PendingCN113480791AEfficient UV blocking effectExcellent UV blocking propertiesPolyolefinWeather resistance

Owner:宿迁联宏新材料有限公司

Vehicle safety fuel tank with self-sealing and explosion-proof functions

PendingCN110843508AImprove securityStop the leakLayered productsUnderstructuresFuel tankControl theory

Owner:TIANJIN JIEQIANG POWER EQUIP

Clothes drying processing method and device based on intelligent clothes dryer and intelligent clothes dryer

PendingCN114737375AEasy to drySure flexibleTextiles and paperLaundry driersProcess engineeringIndustrial engineering

Owner:CHONGQING HAIER ROLLER WASHING MASCH CO LTD +1

Network node and method of taking a mobility decision by considering the beamforming capabilities of the neighbouring nodes

InactiveCN106576272ASite diversityNetwork planningNODALDownlink beamforming

Owner:TELEFON AB LM ERICSSON (PUBL)

Magnetic seat drill stable in drilling and high in efficiency

ActiveCN110548889ADrilling stabilityImprove efficiencyLarge fixed membersMaintainance and safety accessoriesPunchingEngineering

Owner:GAOYOU YONGFA MACHINERY

Barrier-free type intelligent parking system based on Internet of Things

ActiveCN109972885ANeat parkingIncrease profitParkingsParking areaElectricity

Owner:诸暨良嘉环保科技咨询有限公司

Short message signature processing method and apparatus

ActiveCN104936155AAvoid the problem of not including signature informationImprove reliabilityMessaging/mailboxes/announcementsSecurity arrangementMassageAuthentication

Owner:CHINA MOBILE GRP BEIJING

Hydraulic puncher

InactiveCN105363884AImprove efficiencyNo biasPunchingEngineering

Owner:扬州明博钢结构有限公司

Method and apparatus for realizing self-adaptive quantization in coding process

InactiveCN101039432AImprove subjective qualityTelevision systemsDigital video signal modificationPattern recognitionMotion vector

Owner:HUAWEI TECH CO LTD +1

Adhesive-free cylindrical bottle cushioning packing box

ActiveCN106742500AImprove buffering effectBeautiful combinationRigid containersCushioningAdhesive

Owner:嘉兴笼列电子商务有限公司

Patient support system and method

InactiveCN102652701AWheelchairs/patient conveyanceWheelchairEngineering

Owner:WOUND RES

Community online service management platform and service method based on Internet

PendingCN114021954ASolve traffic inconvenienceReduce the quality of livingDatabase updatingResourcesCommunity settingThe Internet

Owner:浙江宇联信息发展有限公司

Luggage and surface layer processing technology thereof

InactiveCN110269340AGood colorImprove wear resistancePretreated surfacesLuggageColor effectEngineering

Owner:平湖市佳舜箱包股份有限公司

Simulation data storage and reading method based on database

PendingCN114330020AGuaranteed synchronicityTroubleshoot out-of-sync technical issuesDigital data information retrievalCAD network environmentData sourceControl data

Owner:XIAN LINGKONG ELECTRONICS TECH CO LTD

Data acquisition method

InactiveCN103684894ASolve test problemsData switching networksData acquisitionNetwork interface

Owner:BEIJING WATERTEK INFORMATION TECH

Fractured sandstone separate layer fracturing acidizing method

InactiveCN106468165AIncrease productionTransform evenlyFluid removalAcid fracturingMaximum level

Owner:PETROCHINA CO LTD

Fluoroplastic communication cable

InactiveCN105161198AHigh temperature resistantReduce the temperatureInsulated cablesCommunication cablesCopper conductorSilica gel

Owner:SUZHOU CHONGEN MOLDING

Multistage heat exchange generation method based on gas-fired heating and purified air regulation

InactiveCN101988739AAvoid pollutionEnergy efficient heating/coolingAir heatersAir cleaningEngineering

Owner:隋红军

Seawater fish culturing feed and preparation method thereof

InactiveCN106689809AReduce pollutionMeeting nutritional needsClimate change adaptationAnimal feeding stuffVitamin CAdditive ingredient

Owner:QINZHOU UNIV

Sprinkling irrigation system based on computer intelligent control

InactiveCN113229116AAvoid the problem of excess water contentClimate change adaptationWatering devicesWater useAgricultural science

Owner:ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE

Radiation resisting signal cable for third generation nuclear power plant and production method

InactiveCN101770834AImprove seismic performanceImprove bending performanceInsulated cablesInsulated conductorsElectrical conductorInsulation layer

Owner:SHANGHAI YALONG IND

Water sprinkling and fertilization device used for greening of lawn in garden

InactiveCN107912273AExpand the spraying rangeImprove work efficiencyWatering devicesPressurised distribution of liquid fertiliserCircular discGear wheel

Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS

Method for enhancing surface property of montmorillonite by freeze-drying technology

PendingCN109824057AIncrease spacingNo lossNanotechnologySilicon compoundsFreeze-dryingMontmorillonite

Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Hydantoin derivatives used as mmp inhibitors

InactiveCN101541789AOrganic active ingredientsSenses disorderHydantoin derivativesCombinatorial chemistry

Owner:ASTRAZENECA AB

System overvoltage suppression device

InactiveCN105958462ARemove protectionSuppression of spike overvoltageEmergency protective arrangements for limiting excess voltage/currentOvervoltageTransformer

Owner:ANHUI LUXUN ELECTRONICS TECH

Auxiliary power supply system of urban rail vehicle

ActiveCN103723044AAchieve lightweightReduce weightElectric powerElectric energy managementElectricityContact network

Owner:青岛朗进集团有限公司

Method for preventing clothes in barrel of drum washing machine from mildewing

ActiveCN111058222APromote growthControl devices for washing apparatusTextiles and paperLaundry washing machineProcess engineering

Owner:GREE ELECTRIC APPLIANCES INC

Virtual button display method, mobile terminal and storage medium

ActiveCN109391733AEasy to useSolve problemsTelephone set constructionsInput/output processes for data processingComputer terminalOn-screen display

Owner:QIKU INTERNET TECH SHENZHEN CO LTD

Password setting device for mobile phone charger

InactiveCN101728856ABatteries circuit arrangementsElectric powerPasswordComputer module

Owner:苏州易珑新材料科技有限公司

Apparatus and method for testing off-line performance of magnetostrictive displacement sensor

ActiveCN103994711AGuaranteed pass rateReliable and reliableUsing electrical meansLinear motionUniversal joint

Owner:BAOSHAN IRON & STEEL CO LTD

Electric micro-plug sliding top cover door system

PendingCN111717006AReduce in quantityImprove securityRoofsElectric machineModular design

Owner:NANJING KANGNI MECHANICAL & ELECTRICAL

Waste residue treatment device for smelting

InactiveCN114777495AQuick catchConvenient for centralized collectionCharge manipulationPreheating chargesSlagEnvironmental engineering

Owner:云南省生态环境科学研究院

Electrocoppering thin film circuit and additive manufacturing method thereof

InactiveCN104968157ANot easily oxidizedAvoid breakingPrinted circuit manufacturePtru catalystAnisotropic conductive adhesive

Owner:李恒 +1

Field emission display

InactiveCN102427014AImprove display qualityReduce temperature differenceElectrode and associated part arrangementsImage/pattern display tubesDisplay deviceField emission display

Owner:AU OPTRONICS CORP

Metal surface anti-fingerprint treatment method and metal product prepared by the metal surface anti-fingerprint treatment method

InactiveCN102400102AHarmless to healthGood anti-fingerprint effectVacuum evaporation coatingSputtering coatingMetallic substrateVacuum coating

Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1