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.

Lubricating inhibitor for drilling fluid and preparation method thereof and drilling fluid containing lubricating inhibitor for drilling fluid

ActiveCN101717622AImprove thermal stabilityImprove stabilitySugar derivativesDrilling compositionWell drillingO methylglucose

Owner:北京奥凯立科技发展股份有限公司

165-degree door hinge

InactiveCN102733696AReduce corner spaceWon't pinchPin hingesEngineeringRocker arm

Owner:GUANGDONG ZHONGQIAO HARDWARE & ELECTRICAL

Cloud printing method and device

PendingCN113590058ARealize remote printingFlexible adjustmentDigital output to print unitsComputer printingProcess engineering

Owner:深圳市链科网络科技有限公司

SAR remote sensing image water area detection false alarm elimination method based on feature cascading

InactiveCN110111352AHigh precisionImage enhancementImage analysisDark spotComputer science

Owner:北京理工雷科电子信息技术有限公司

Distributed small-current grounding fault location method

ActiveCN106338676AWide range of adaptabilityImprove reliabilityFault location by conductor typesInformation technology support systemPower flowMaster station

Owner:SHANDONG KEHUI POWER AUTOMATION

Method and terminal for hang-up reply of mobile telephone

InactiveCN102647692ASubstation equipmentMessaging/mailboxes/announcementsMobile telephonyText messaging

Owner:SHANGHAI LIANGMING TECH DEV

Supported single metallocene catalyst used for ethylene polymerization

ActiveCN104059174AEasy to prepareEasy to shapeAluminoxaneSilica gel

Owner:CHINA PETROLEUM & CHEM CORP +1

Oxygen sensor wire harness connector

InactiveCN103427223APrevent floodingExtended service lifeCouplings bases/casesOxygen sensorGraphite

Owner:安徽华工汽车电子科技有限公司

Synchronous coloring and curing device for multiple optical fibers

InactiveCN111875266AIngenious designImprove work efficiencyFibre mechanical structuresEngineeringMaterials science

Owner:四川天府江东科技有限公司

Loess slope composite biological protection system

PendingCN113266026AGive full play to the protective effectPrevent slippingSelf-acting watering devicesExcavationsWater storageSoil science

Owner:XIAN UNIV OF SCI & TECH

Sanitary washing device

ActiveCN108396838ABathroom coversLavatory sanitoryWaste managementNozzle

Owner:AISIN SEIKI KK

Multiple-input multiple-output imaging radar for slope monitoring

PendingCN113219460AAvoid phase errorQuick scanUsing wave/particle radiation meansRadio wave reradiation/reflectionMicrostrip array antennaDigital signal processing

Owner:广州桑瑞科技有限公司 +1

Circuit dynamic voltage drop detection method, device, electronic equipment and storage medium

PendingCN113946200AImprove accuracyVolume/mass flow measurementPower supply for data processingHemt circuitsVoltage drop

Owner:SHENZHEN DAPU MICROELECTRONICS CO LTD

Disposable compound environment-friendly packaging material

InactiveCN110041721AImprove mechanical propertiesImprove performanceFlexible coversWrappersCelluloseCalcium biphosphate

Owner:邓明星

Fly ash and building waste water permeable brick and preparation method thereof

InactiveCN106145880AHigh strengthGood water permeabilityBrickCarbonization

Owner:ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD

Monomolecular force electric characterization system based on substrate movement and control method thereof

ActiveCN112540195AIncrease the means of representationComprehensive signalScanning probe microscopySilicon chipMaterials science

Owner:XIAMEN UNIV

Atractylodes macrocephala endophytic fungus, fermentation product and application thereof

ActiveCN113956983AGrowth inhibitionIncrease resistanceBiocideFungiBiotechnologyPhomopsis sp.

Owner:ZHEJIANG CHINESE MEDICAL UNIVERSITY

Quick heat radiation motor

ActiveCN106059196AShort stayDrainage is highly targetedCooling/ventillation arrangementSupports/enclosures/casingsLow noiseEngineering

Owner:佛山市顺德区乐普达电机有限公司

Recycled polyester material and preparation method thereof

ActiveCN111978686AHigh tensile strengthImprove bending strengthPlastic recyclingPolyesterGlass fiber

Owner:GUANGZHOU UNIVERSITY

Extrusion mixing device in PP foam sheet extruder

InactiveCN104527022APrecise temperature controlImprove uniformityTemperature controlDraining tube

Owner:ZHANGJIAGANG LANHANG MACHINERY

Sound source positioning method and device

PendingCN113064118AHigh precisionImprove accuracyPosition fixationSystems with undesired wave eliminationSound sourcesNoise

Owner:VIVO MOBILE COMM CO LTD

Electro-hydraulic proportional position synchronous control system for bending machine

ActiveCN111608968ASolve the safety hazards caused by manual operationSimple structureServomotor componentsServomotorsMachineComputer control

Owner:NANJING INST OF TECH +1

RH refining system and production method of ultra-low carbon steel

ActiveCN113293262AIncrease the refining rateShorten vacuum smelting timeGas analyser construction detailsExhaust fumesMolten steel

Owner:SHOUGANG JINGTANG IRON & STEEL CO LTD

Anti-deformation machining device and method for automobile generator pulley

InactiveCN105234444AWill not deformNo deformationChucksPulleyEngineering

Owner:时硕科技(无锡)有限公司

External virtual storage deploying method, device and system

ActiveCN105549906AInput/output to record carriersSoftware simulation/interpretation/emulationComputer moduleService configuration

Owner:HUAWEI TECH CO LTD

Multifunctional teaching model

InactiveCN111105676ANot soreEasy to operateTeaching apparatusDisplay boardSoftware engineering

Owner:CHONGQING UNIV OF ARTS & SCI

Wireless remote water meter for metering water

PendingCN112254778AEasy to readAvoid damageVolume indication and recording devicesWater flowEnvironmental engineering

Owner:无锡中仪智能科技有限公司

Polyether-ether-ketone laser-irradiation-based graphene preparing method

InactiveCN109292759AGood biocompatibilityThe preparation process steps are simpleGrapheneBiocompatibility TestingPolyether ether ketone

Owner:XINJIANG UNIVERSITY

Movable fruit collecting device

PendingCN111436281AReduce kinetic energyReduce the probability of bumping into each otherPicking devicesElectric machineAgricultural engineering

Owner:NANTONG SCI & TECH VOCATIONAL COLLEGE

Phase focusing method and user terminal

ActiveCN105007422AIncrease success rateTelevision system detailsColor television detailsWave shapeTime segment

Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Interaction method and device

ActiveCN113099265ARich display formIncrease interactionGeometric image transformationCharacter and pattern recognitionControl signalHuman–computer interaction

Owner:BEIJING DA MI TECH CO LTD

Method for quickly looking for feature character strings in text sequential data

InactiveCN105653567ASolve problems where an exact match is requiredSolve matching problemsSpecial data processing applicationsArray data structureOriginal data

Owner:CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH

Method for establishing acute renal failure model of dog

PendingCN114190329AConsistent with pathological changesAnimal husbandryFood processingStatistical analysisRenal histopathology

Owner:HUAZHONG AGRI UNIV

Preparation method for photo-curing coating compound

InactiveCN107603463AEliminate oxygen barrier effectUniform curingPolyurea/polyurethane coatingsCarbon nanotubeSilicon dioxide

Owner:CHENGDU NASHUO TECH

Preparation method of ginseng fruit bud tea, Longzhu pill-shaped ginseng fruit bud tea and brewing method

PendingCN111280277ASimple preparation processReasonable preparation processTea substituesHorticultureGinseng

Owner:广东人参果科技研究院石林分院

Remote control apparatus using video phone including wifi-module

InactiveCN103716368AAcknowledge failureLow maintenanceTwo-way working systemsTransmissionWireless routerRemote control

Owner:(株)庆东ONE

Method for reusing waste water of aquaculture

InactiveCN1826882AReduce manufacturing costReduce consumptionClimate change adaptationPisciculture and aquariaAquatic productProcess engineering

Owner:吕大伟

Biomimetic liquid lubricating agent for drilling fluid and preparation method thereof

ActiveCN106634885APromote degradationNo pollutionDrilling compositionEpoxyFluorescence

Owner:石家庄华莱鼎盛科技有限公司

Agricultural fertilizer application mechanism

InactiveCN106211895AChange the frequency of outputFertiliser distributersAgricultural engineeringEngineering

Owner:淮安荣宇机械有限公司

Test fixture and test device

ActiveCN113742146AAchieve improvementDetecting faulty computer hardwareMeasurement instrument housingComputer hardwareDesign testing

Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

Multifunctional rotatable transport plane

InactiveCN107324001ADesign innovationPractical designConveyorsSpace heating and ventilation safety systemsRotary stageSlide plate

Owner:ANHUI PROVINCIAL HANSHAN MINSHENG PORCELAIN

Door opening early warning method, device and equipment and storage medium

PendingCN114360056AQuick checkQuick forecastScene recognitionBiometric pattern recognitionFeature extractionComputer graphics (images)

Owner:DONGFENG LIUZHOU MOTOR

Device state monitoring and management system

PendingCN112240796AReduce setup costsVolume indication and recording devicesClosed circuit television systemsComputer hardwareCommunication unit

Owner:张力

Light source

InactiveCN106663592AGas discharge lamp detailsResonant cavityMicrowave

Owner:CERAVISION LTD

Multi-angle visual new energy LED display screen for popularization and propaganda

InactiveCN113409697AStable power supplyEasy to installStands/trestlesCooling/ventilation/heating modificationsLED displayMotor drive

Owner:深圳市永鑫荣伟业科技有限公司

Broad-spectrum solid phase extracting filler and its application

InactiveCN106432605AEasy to prepareFast preparation methodComponent separationOther chemical processesMetaboliteElectrical polarity

Owner:JINAN UNIVERSITY +1

Method for molding melon rind type metal roofing board

InactiveCN103790288AEasy to installNice appearanceRoof covering using slabs/sheetsEngineeringMelon (food)

Owner:SHANGHAI YAZE SOLAR METAL ROOFING ENG

Calculation and storage fused cluster system

InactiveCN105657057AImprove acceleration performanceFast exchangeTransmissionResource poolCluster systems

Owner:HUAWEI TECH CO LTD

Pore forming machine with symmetrical rotating wheels for geotechnical engineering

ActiveCN104314121ASimple structureHigh torqueMechanical machines/dredgersHydraulic motorControl system

Owner:钟景尧

Vacuum tyre capable of being fast assembled and disassembled

InactiveCN107867112AEasy to replacePrevent air leakageRimsDisc wheelsEngineeringLower half

Owner:SHENZHEN VIP TEK ELECTRONICS

Line entity storage method, apparatus and system

ActiveCN108363736ASpecial data processing applicationsPoint densityComputer science

Owner:国家测绘地理信息局第三地形测量队

Suspension net pulling lifting beautifying method

InactiveCN110522533AGood effectCosmetic implantsEngineeringForehead

Owner:朱男男

Comprehensive tension matching method with goal of quality control in strip steel shearing process

InactiveCN105956261AGuaranteed reasonable valueAvoid accidents such as strip trimming and slippingGeometric CADSpecial data processing applicationsLower limitQuality control

Owner:TANGSHAN DELONG STEEL CO LTD

Method for processing arsenic in nonferrous metallurgy polluted acid through steel slag treatment

InactiveCN106277266AStabilizationGelling activityWater treatment parameter controlWater contaminantsMass ratioWater quality

Owner:KUNMING UNIV OF SCI & TECH

Sound control shift device for disabled person

InactiveCN106773804AAchieve effectivenessImprove convenienceSpeech recognitionProgramme control in sequence/logic controllersEngineeringMemory cards

Owner:广安市怡华电子科技有限公司

Glazing device for sheet-fed printing press

ActiveCN104175711AImprove work efficiencyAvoid printing failures such as smudgingPrinting press partsEngineeringPrinting press

Owner:江苏中铂智能制造有限公司

Semiconductor device and forming method thereof

PendingCN114446880ATransistorSolid-state devicesDopantGate dielectric

Owner:TAIWAN SEMICON MFG CO LTD

Environmentally friendly high elasticity sealant and preparation method thereof

ActiveCN109897589ASolve weather resistanceImprove sealingNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesUltravioletSealant

Owner:YUZHONGQING WATERPROOF MATERIALS CO LTD

Honey tea

InactiveCN107873899AImprove immunityPromote blood circulationPre-extraction tea treatmentAdditive ingredientBULK ACTIVE INGREDIENT

Owner:李继盛

Lubricating oil base oil composition

ActiveCN102757837AIncrease valueLow costBase-materialsSulfurViscosity index

Owner:CHINA PETROLEUM & CHEM CORP +1

Organic composition for forming ultra-thin copper foil release layer and preparation and application thereof

InactiveCN104968155AImprove conductivitySimple processCircuit precursor manufactureBenzeneElectrolysis

Owner:HEFEI UNIV OF TECH

Descaling agent

InactiveCN105482926AEasy to useOrganic non-surface-active detergent compositionsInorganic non-surface-active detergent compositionsAcetic acidPhosphoric acid

Owner:杨博葳

Textile fabric cutting device

InactiveCN112210982AGuaranteed smoothImprove crop qualitySevering textilesStructural engineeringKnife blades

Owner:湖州汉源纺织有限公司

Kit used for detecting human KRAS gene mutation and detecting method thereof

InactiveCN107904292ASimple structural designEasy to useMicrobiological testing/measurementDNA/RNA fragmentationBioinformaticsKRAS Gene Mutation

Owner:SHANGHAI PERSONAL BIOTECH

Image processing method and device, computer equipment and storage medium

PendingCN112907702AGuaranteed accuracyImprove efficiencyGeometric image transformationCharacter and pattern recognitionImaging processingRadiology

Owner:TENCENT TECH (SHENZHEN) CO LTD

Automobile operation condition design method based on prior information and big data

ActiveCN107908853AReproduce driving characteristicsFix problems that no longer applyGeometric CADDesign optimisation/simulationPrior informationAlgorithm

Owner:JILIN UNIV

Rubber strip part positioning device and processing assembly line with same

PendingCN110271213APrecise positioningTyresEngineeringAssembly line

Owner:MESNAC

Bluetongue virus serum 1 (BTV1) VP2 protein monoclonal antibody (BTV1-4B6), B-cell epitope polypeptide identified by BTV1-4B6 and application of BTV1-4B6

InactiveCN103305473AImmunoglobulins against virusesAntiviralsImmunofluorescenceProtein.monoclonal

Owner:HARBIN VETERINARY RES INST CHINESE ACADEMY OF AGRI SCI

Method for preparing high-thermal-conductivity silicon nitride ceramic

ActiveCN109851369AReduce the introductionReduce glass phase contentCompression moldingGas pressure sintering

Owner:江西中科上宇科技有限公司

Device for counting sterilisation cycles

ActiveCN107847623AActuation to avoidAccurate explanationSurgeryEndoscopesEngineeringParameter dependent

Owner:AESCULAP AG

High-precision bipod

InactiveCN110044207APrevent rotationIngenious designGun mountingsFiberTerrain

Owner:如皋市三源测量测绘仪器有限公司

Method, system and device for realizing home network interconnection

ActiveCN101867508ARealize interconnectionLimited controlNetworks interconnectionInterconnectionService information

Owner:HUAWEI TECH CO LTD

Computerized control system for lift touch screen intelligent freight houses

InactiveCN102854799AImprove management abilityIncrease floor area ratioComputer controlComputer control systemMicrocomputer

Owner:迪士弗信息技术(广州)有限公司

Device and method for adaptive adjustment of roller gap of crusher

ActiveCN105797809AGuaranteed uptimeIncrease the level of automationRevolution surface grinding machinesGrain treatmentsCrusherLinear motor

Owner:CHINA UNIV OF MINING & TECH +1

Counter-burning type biomass waste resource pyrolysis carbon gasification heating equipment

InactiveCN102424762AImprove the ecological environmentSolve the energy consumption of lifeLighting and heating apparatusChemical industryAcetic acidCombustible gas

Owner:LUOYANG JUNTENG ENERGY TECH +1

Natural gas pipeline feeder

ActiveCN107816637AThe second seal is achievedGuaranteed uptimePipeline systemsEngineeringMechanical engineering

Owner:江苏汉兴电气有限公司

Method for improving silkworm chrysalis protein functional characteristics using ultrasonic wave coordinated with enzymolysis technology and product and application thereof

InactiveCN103190524AShort reaction timeReduce energy consumptionAnimal proteins working-upSolubilityEnzymatic hydrolysis

Owner:JIANGSU UNIV OF SCI & TECH

Observation station for installing strong motion instrument

InactiveCN104110142AExtended service lifeImprove monitoring accuracySeismologyBuilding insulationsEngineering

Owner:浙江省地震监测预报研究中心

AB composite insulation board and insulation board assembly

InactiveCN107399955AImprove insulation effectImprove fire performanceHeat proofingCeramicwareThermal insulationAdhesive

Owner:河北泰晟利华节能材料有限公司

Method for code stream distribution of depth image and vein image

InactiveCN101365141AImage analysisTelevision systemsVeinViewpoints

Owner:ZHEJIANG UNIV

Liquid medicine concentrating device for processing traditional Chinese medicines

ActiveCN109091899AImprove concentration efficiencyEasy to replaceEvaporator accessoriesPediatricsChinese herbology

Owner:SHANGHAI SHENYA ANIMAL HEALTH PROD FUYANG CO LTD +1

Large-diameter mechanical pipe jacking construction technology for soft soil foundation in collapsible loess area

ActiveCN111335912AImprove bearing capacityGuaranteed bearing capacityUnderground chambersTunnel liningSoil scienceGeological survey

Owner:中建生态环境集团有限公司 +1

Stem cell conveying box

ActiveCN103482230AEasy to transportGood growthPackaging under vacuum/special atmosphereShock-sensitive articlesCryopreservationEngineering

Owner:奥思达干细胞有限公司

Multifunctional internal fixation tool for spine

ActiveCN110353792AAchieve disassemblyAchieve rotationInternal osteosythesisSurgical operationEngineering

Owner:SHANGHAI REACH MEDICAL INSTR

Method for equalizing voltage of single batteries of battery pack system

ActiveCN108448179ASave resourcesImprove real-time performanceCharge equalisation circuitElectric powerPre-chargeEngineering

Owner:JIANGSU ROTHWELL ELECTRIC

Integrated stretchable lithium ion battery and preparation method thereof

InactiveCN111477838AImprove adhesionReduce sheddingElectrode carriers/collectorsSecondary cellsSpinningLithium-ion battery

Owner:UNIV OF SCI & TECH BEIJING

Tumour-pulling knife for removing steel rail welding beading

ActiveCN101428360AExtended service lifeWon't scratchWelding/cutting auxillary devicesAuxillary welding devicesLocking mechanismBody positions

Owner:CHANGZHOU RUITAI ENG MASCH CO LTD +1

Water guiding side frame of building window frame

InactiveCN102022074AQuick exclusionAvoid wall cancerCondensed water drain-offWater dischargeEngineering

Owner:王瑞汶

Self-adaption adjustment method and device for write operation timing path of chip storage

ActiveCN105677593AIncrease operating frequencyWon't slow downElectric digital data processingClock rateControl memory

Owner:FUZHOU ROCKCHIP SEMICON

Water-washable touch-controlled care apparatus

ActiveCN109907850AImprove touch accuracyImprove experienceElectronic switchingMetal working apparatusCapacitanceElectricity

Owner:东莞市沃伦电子科技有限公司

Integrated optical two-dimensional electric field sensor and measurement system

ActiveCN105182094AReduce volumeReduce measurement errorElectrostatic field measurementsElectric field sensorDiffusion

Owner:ZHEJIANG UNIV

IMA recovery method conforming to AC 20-170

PendingCN114356627AImprove usabilityImprove securityTransmissionRedundant operation error correctionAircrewHardware modules

Owner:XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA

Low-temperature curing method and system of heterojunction solar cell

PendingCN114444380AEnsure consistencyHigh mechanical strengthSemiconductor/solid-state device manufacturingDesign optimisation/simulationHeterojunctionElectrical battery

Owner:CHINALAND SOLAR ENERGY

Voice calling method and device, and storage medium

InactiveCN111200852AInhibit migrationImprove experienceConnection managementInformation controlSpeech sound

Owner:ZTE CORP

Filtering device and vacuumizing system

PendingCN111974100AImprove filtering effectEfficient removalDispersed particle filtrationThermodynamicsDust control

Owner:NINGXIA LONGI SILICON MATERIALS

Integrated pipeline pump with high cavitation resistance

PendingCN112177944AGuaranteed compactnessImprove cavitation resistancePump componentsPump installationsImpellerElectric machinery

Owner:WUHAN SECOND SHIP DESIGN & RES INST

Multifunctional portable data sharing management apparatus

InactiveCN103379128AEasy to shareTransmissionThe InternetData sharing

Owner:FLUIDITECH IP

Electrolytic coloring process for aluminum material

ActiveCN112064087AMeet thickness requirementsAnodisationMetallurgyPhysical chemistry

Owner:盘锦忠旺铝业有限公司

Key negotiation method, device and terminal

PendingCN114362925AAvoid wastingReduce computationKey distribution for secure communicationUser identity/authority verificationComputer networkEngineering

Owner:CHINA MOBILE COMM LTD RES INST +1

Femoral stem prosthesis capable of preventing displacement and loosening

PendingCN114587716AStable matchJoint implantsFemoral headsBone marrow cavityFemur bone

Owner:XIANGYA HOSPITAL CENT SOUTH UNIV

Restoring method of eroded defective products of amorphous silicon cells and special device

InactiveCN101834234AFinal product manufactureSemiconductor devicesAmorphous silicon solar cellEconomic benefits

Owner:江苏综艺光伏有限公司

Method for renaming Bluetooth modules and electronic equipment

InactiveCN108228562AEasy to operateImprove naming efficiencyNatural language data processingBroadcast service distributionComputer moduleBluetooth

Owner:GOERTEK OPTICAL TECH CO LTD

Electronic cutting device and metal fusing agent grain

PendingCN109020769AEasy to carryEasy to operateExplosivesWelding apparatusElectrical resistance and conductanceEngineering

Owner:NANJING FORESTRY UNIV

Manufacturing technology of electrolyte used for emergency power supply equipment

InactiveCN107221703AFast dryingReduce generationOrganic electrolyte cellsSecondary cellsManufacturing technologyWater of crystallization

Owner:HEFEI SHANGQIANG ELECTRIC TECH CO LTD

Radome for radar level meter andradar level meter

PendingCN112857524AMachines/enginesLevel indicatorsRadarEngineering

Owner:BEIJING CONNETECH ELECTRONICS TECH CO LTD

Inverted tooth chain sprocket drive system with reduced meshing impact

InactiveCN102144111AGearingDriving chainsEntrance angleGreek letter sigma

Owner:CLOYES GEAR & PRODS INC

Nonvolatile memory device and wear leveling method thereof

InactiveCN102096637AExtended service lifeMemory adressing/allocation/relocationParallel computingPhysical address

Owner:ASOLID TECH

Novel medical pot applied to pharmaceutical production

InactiveCN108116751AEasy accessImprove convenienceDischarging meansExternal fittingsBiochemical engineeringDrugs production

Owner:广州大正机械科技开发有限公司

Integrated Texaco coal-to-methanol simulation teaching factory

InactiveCN103400532AImprove operational skillsSatisfy the function of theoretical teachingEducational modelsDistributed control systemCoal

Owner:NANJING COLLEGE OF CHEM TECH

Environmental sanitation ship capable of automatically removing garbage on water

InactiveCN105197193AStructural Design ImprovementEasy and flexible operationWater cleaningPropulsion power plantsRefuse collectionManufacturing technology

Owner:珠海市奔腾智能科技有限公司

Stereo garage automatic parking system and method

InactiveCN111127677AControlled entryConvenient automatic parking and storageTicket-issuing apparatusParkingsParking spaceServer

Owner:深圳市易停车库科技有限公司

Design and calculation method for additionally arranging middle support arm to construct three support arms of arc door based on inclined support arm

PendingCN112199798AOvercoming the inaccurate calculation of the included angleThe calculation method is accurateGeometric CADDesign optimisation/simulationStructural engineeringMechanical engineering

Owner:SINOHYDRO BUREAU 11 CO LTD