Kab lus no muab cov tob tob rau hauv qhov tseem ceeb tshaj plaws cuam tshuam graphite siv electrode kev noj hauv hluav taws xob rauv (EAF) steelmaking. Nkag siab cov ntsiab lus tseem ceeb rau cov hlau mills, cov tuam txhab, thiab metallurgy cov tuam txhab tsom rau lawv cov haujlwm, txo tus nqi, thiab txhim kho kev ua haujlwm zoo. Cov lus qhia no muaj nqis nyeem vim tias nws muaj kev pom ntawm lub caij tsim khoom lag luam caij nyoog, muab kev paub txog EAF EAF.
Dab tsi yog graphite electrode kev noj hauv eAF steelmaking?
Graphite siv cov khoom siv electrode yog hais txog qhov ntau npaum li cas ntawm graphite cov khoom siv uas tau siv thaum lub zog hluav taws xob rauv (EAF) steelmaking txheej txheem. Qhov kev siv no yog ntsuas hauv kilo graphite ib tuj ntawm cov hlau tsim (kg / t). Tusqho cubsiv high-zog fais arcs, tsim los ntawmGraphite electrodes, kom yajseemHlau thiab lwm yam khoom siv raw. Tussmelting txheej txheemyog khaus, cuam tshuam nrog heevQhov Kub Siab, thiab yog li inevitably ua rau maj mam yaig thiab noj ntawm covCov hluav taws xob hauv hluav taws xoblub nkojqho cub.
Cov txheej txheem yog cov nyom, thiab ntau covliagles cuam tshuam tus nqi ntawmkev noj electrodeCov. Nws yog tus nqi ua haujlwm tseem ceeb rau EAF steel mills, cuam tshuam ncaj qha cuam tshuam cov peev txheej thiab ntau lawm kev ua tau zoo. Nkag siab thiab tswjKev tau txais ntawm Graphite hluav taws xobyog lub hom phiaj tseem ceeb rau ib qhosteelmakingkev ua haujlwm.

Vim li cas thiaj nkag siab electrode noj tseem ceeb?
Kev to taubGraphite electrode Kev Sivyog qhov tseem ceeb rau ntau yam, cuam tshuam rau ob qho tib si ua haujlwm thiab nyiaj txiag ntawm EAFsteelmakingCov. Tsawg dua electrode kev txhais lus txhais ncaj qha rau qhov tseem ceeb nqi.Graphite electrodesPuas muaj nuj nqis ntau dua, thiab txo qis lawv qhov kev siv tuaj yeem txhim kho hauv qab kab rau cov hlau mills.
Tshaj dhau tus nqi, kev siv hluav taws xob kom zoo tshaj plaws los txhim kho rauv taws ua kom zoo. Tsawg dua cov kev hloov pauv hluav taws xob electrode txhais tau txhais tau tias txo qis qis thiab nce ntxiv. Nws kuj tseem tuaj yeem muaj kev cuam tshuam zoo dua ntawm covsmelting txheej txheem, coj mus rau cov hlau siab dua. Ua tau zooqho cubkev ua haujlwm thiab tsawgkev noj electrodekuj pab txhawb kom ib puag ncig ib puag ncig me me los ntawm kev txo cov kev siv hluav taws xob thiabkev tso tseg.
Dab tsi yog qhov tseem ceeb cuam tshuam rau graphite electrode kev noj?
Coobyam cuam tshuam rau Graphite electrode Kev SivHauv EAFsteelmakingCov. Cov xwm txheej no tuaj yeem nthuav dav rau hauv peb hom: Cov Khoom Siv Hluav Taws Xob,qho cubkev ua haujlwm tsis muaj, thiab cov khoom siv ntsig txog.
Tej yam tseem ceebXws li:
- Tswv yim siv hluav taws xob:Qhov no yog txoj kev yaig ncaj qha ntawm covCov Tswv Yim Hluav Taws XobVim yog cov cua sov hnyav thiab cov tshuaj lom neeg ntawm arc.Lus Qhia Sivyog cuam tshuam los ntawm yam zoo liceev ceev, fai fab hov ntau, thiabarc ruaj khov.
- Kev Taug Xyuas Hauv Hluav Taws Xob:Qhov no hais txog tusoxidationntawm electrode nto raws nws qhov ntev.Oxidation poobyog feem ntau tshwm sim los ntawm kev raug mob rau cov pa oxygen thiab lwm yam oxidizing cov neeg sawv cev hauv lubqho cubhuab cua ntawmQhov Kub Siab.
- Kev txhaum: Graphite electrodesyog nkig thiab kuj tseem yuav yogsiv sijhawmraukev txhaum, qhov no yuav yog vim yogzoo lossis tsis raugkev ua haujlwm ntawm cov electrodes.
Nws yog ib qho tseem ceeb kom nkag siab thiab tswj cov notej yam tseem ceebTxhawm rau txhim kho covKev Pab Cuam thiab Kev Noj Khoom HausntawmLub Zog Graphite Hluav Taws Xob.

Yuav ua li cas thiaj li zoo ntawm graphite hluav taws xob cuam tshuam kev noj?
TusZoo ntawm cov electrodesyog ib qho ntawm feem ntauyam tseem ceebcuam tshuam kev noj haus. Siab zooGraphite electrodes, feem ntau ua los ntawm hwmKoob cokelossisRoj av coke, Ua kom pom cov khoom zoo tshaj uas ua rau txo qis kev siv tus nqi. Cov khoom no suav nrog:
- Kev siv hluav taws xob siab:Zoo duakev coj uaminimizes lub zog poob thiab txo cov cua sov tsim tawm hauv cov electrode nws tus kheej, qeeb qeebsmelting txheej txheemthiab noj.
- Tsawg Electrical tsis kam:Qhov no txo cov cua sov jolele, uas ua rau hluav taws coj mus rau hluav taws xob hnav.
- Siab Thermal Condivity:Kev tiv thaiv tshav kub kub tsis kam tiv thaiv hauv zos overheating thiab txooxidationthiabsublimation.
- Oxidation zoo ua tsis kam:Siab zooCov khoom siv graphiteyog tsis tshua muaj ntxim rauoxidation, sim nws lifespan.
- Xav muaj zog txhua yam:Muaj zog electrodes yog tsawg dua qub raukev txhaumthiab spalling.
- Thermal poob siab tsis kam ntawm Graphite Electrodes:Lub peev xwm tiv lub zog kom sov hloov yam tsis muaj kev tawg.
Kev xaivGraphite electrodesuas sib ntsib nruj kev nruj kev cai thoob ntiaj teb thiab muaj tau zoo heevpoob siab tsis ntawm graphite electrodesyog qhov tseem ceeb rau kev txo qis.
Lub luag haujlwm twg yog kev ua haujlwm sib txuas ua si hauv cov electrode?
Qho cubKev khiav hauj lwm tsis muaj qhov cuam tshuam zoo heev raukev noj electrodeCov. Ob peb qhov tseem ceeb yog koom nrog:
- Ceev tam sim no:Siab duaceev ceevua rau muaj kev kub ntxhov ntawm lubCov Tswv Yim Hluav Taws Xob, kev noj haus sai sai.
- Voltage:Yam tau siabfai fab hov ntauchaw teeb tsa yog qhov tseem ceeb. Ntau dhaufai fab hov ntautuaj yeem ua rau arc instability thiab nceoxidationCov. Qhov tseebVoltage thiab tam sim noyog qhov tseem ceeb los tswj ib lub arc ruaj khov.
- Arc Leng Lwj:Tswj qhov tseebarc ntevyog qhov tseem ceeb. Luv heev ib lub arc tuaj yeem ua rau muaj cua sov ntau dhau ntawm covCov Tswv Yim Hluav Taws Xob, thaum lub sijhawm ntev ntev dhau los arc tuaj yeem ua rau qhov tsis ruaj khov thiab nce ntxivoxidationCov. Feem ntau,Nruab nrab thiab luv luv arcsua hauj lwm.
- Cov lus txhawb zog:Lub zog tag nrho cov tswv yim rau lubqho cubMuaj zog cuam tshuam rau lub zog muaj rau melting thiab, vim li ntawd, tus nqi ntawm electrode. TusXaiv Lub ZogCov tsis muaj lub luag haujlwm tseem ceeb.
- Cov Kev Cai Tswjfwm Electrode:Ib tug zoo-tu cov kev cai ua kom muaj kev pom zoo ntawm arc tswj, tsawg heevkev ywj faj ywj fwmthiab txo kev noj haus.ARC Tam Sim Noyuav tsum ruaj khov.
- Dej txias:Ua tau zooDej Txiasntawm cov tuav hluav taws xob pab yuav pab kom ua kom sov thiab txo qisoxidation.
Raws caiqho cubKev ua haujlwm, suav nrog kev ua tib zoo tswj ntawm cov tsis sib haum no, yog qhov tseem ceeb rau kev ua tiav qib siabkev noj electrode.
Yuav ua li cas oxidation pab txhawb rau graphite siv?
Oxidationyog qhov tseem ceeb contributor rauGraphite electrode Kev SivCov. Nws tshwm sim thaum kubGraph kaw electrodereacts nrog oxygen nyob rau hauv lubqho cubCov huab cua, ua cov pa roj carbon monoxide (CO) thiab cov pa roj carbon dioxide (CO2). Cov txheej txheem no maj mam noj ntawm cov khoom siv hluav taws xob, txo nws txoj kab uas hla thiab lub neej.
Ntau yam cuam tshuam tus nqi ntawmoxidation:
- Kub:Siab dua qhov kub sim nrawmoxidationtxheej txheem.
- Oxygen Concverration:Nce cov pa oxygen hauvqho cubcua ua rau siab duaoxidationtus nqi.
- Roj Flow:Cov roj av ntau dua tuaj yeem nce cov khoom siv ntawm oxygen mus rauCov Chaw Nteg, Txhawb nqaoxidation.
- Cov txheej txheej hauv tshuab:Qee cov hluav taws xob muaj cov txheej txheem tiv thaiv uas pab txooxidation. Los tiv thaiv oxidationTxheej ci tuaj yeem txuas ntxiv rau lub neej.
Tsawgoxidation poobyog qhov tseem ceeb rau kev ncua lub neej hluav taws xob. Qhov no tuaj yeem ua tiav los ntawm kev ua tib zoo tswj ntawm lubqho cubcua, siv tsim nyogCov pa tshuab paCov tswv yim, thiab cov khoom siv ua haujlwm nrog cov tshuaj tiv thaiv oxidation zoo.
Tuaj yeem electrode bethage txawm tias kev noj ntau dua?
Yog, Electrodekev txhaumtuaj yeem nce siabkev noj ntawm electrode. Graphite electrodesMuaj ntau lub ntsej muag muaj qab hau, thiab thaum lawv tsim los tiv thaiv EAF kev ntxhov siab EAF, lawv tuaj yeem tsoo qee yam kev mob. Breakage tuaj yeem tshwm sim los ntawm:
- Thermal poob siab:Kev hloov pauv kub sai sai tuaj yeem ua rau muaj kev ntxhov siab uas ua rau tawg thiabkev txhaum.
- Neeg kho tshuab:Ntau dhau lawm rog, xws li cov tshwm sim los ntawm kev poobSeem Hlau Hlaulossis tuav tsis ncaj ncees, tuaj yeem ua rau tawg.
- Khoom tsis xws li:Sab hauv flaws lossis tsis sib thooj hauv cov khoom electrode tuaj yeem ua kom tsis muaj zog thiab nce kev pheej hmoo ntawmkev txhaum.
- Tsis raug cai sib koom ua ke: Siv cov torque thiab cov txheej txheem tseem ceeb heev.
- Cov Hluav Taws Xob Kab Kev Co: Kev co ntau dhau yuav ua rau tawg.
Thaum lub electrode tawg, ib feem tseem ceeb ntawm nws yuav siv tsis tau, ua rau muaj kev nce ntxiv nyob rau hauv tag nrhokev noj ntawm graphip electrodeCov. Kev tiv thaiv ntawmkev txhaumyog vim li no qhov tseem ceeb ntawm kev txo cov peev txheej hluav taws xob.
Yuav ua li cas kom zoo electrode noj: kev coj ua zoo tshaj plaws
Ua kom zoo duaGraphite electrode Kev SivYuav tsum muaj ib qho kev sib ze, encompassing electrode,qho cubkev ua haujlwm, thiab kev ua haujlwm txij nkawm. Nov yog qee qhov kev coj ua zoo tshaj plaws:
- Xaiv cov hluav taws xob zoo hluav taws xob:Xaiv cov ntaub ntawv nrog cov khoom siv lub cev thiab tshuaj lom neeg, tsim nyog rau koj qhov tshwj xeebqho cubthiab kev ua haujlwm.
- Txhim kho cov cub tawg ua haujlwm:Ua tib zoo tswjceev ceev, fai fab hov ntau, arc ntev, thiab lub hwj chim tswv yim los txo electrode hnav.
- Tswj lub arc ruaj khov:Xyuas kom meej arc los ntawm kev cai electrode zoo thiab tswj cov slag chemistry.
- Txo cov oxidation:Tswj lubqho cubCov huab cua, siv cov txheej txheem oxygen tsim nyog, thiab txiav txim siab cov hluav taws xob nrog kev tiv thaiv oxidation.
- Tiv thaiv kev tawg:Kov cov hluav taws xob ua tib zoo, zam kev poob siab thermal, thiab ua kom muaj kev sib koom ua kom nruj.
- Nquag tshuaj xyuas cov electrodes:Saib xyuas cov mob electrode thiab txheeb xyuas cov cim ntawm kev puas tsuaj lossis kev hnav ntau dhau.
- Kom muaj electrode ntxiv:Ua raws cov txheej txheem kom paub kom ntxiv rau cov ntu tshiab.
- Txhim Kho Seem Them:Ua kom ntseeg tau tias cov ntawv xa tawm kom tsawg rau kev txo cov kev ntxhov siab ntawm cov electrodes.
- Tus neeg teb xov tooj kev kawm:Cov neeg tshaj tawm cov haujlwm ntawm kev coj ua zoo tshaj plaws rauqho cubKev ua haujlwm thiab kev tswj hwm hluav taws xob.
- Cov Ntaub Ntawv Kev Ntsuam Xyuas: Taug qab cov ntaub ntawv hluav taws xob kom txheeb xyuas cov ncauj lus thiab thaj chaw rau kev txhim kho.
Los ntawm kev siv cov kev coj ua zoo tshaj plaws, steel mills tuaj yeem txo qiskev noj electrode, coj mus them nqi txuag thiab txhim kho kev ua haujlwm.
Dab tsi yog cov qib sib txawv ntawm graphite electrodes thiab lawv qhov kev cuam tshuam?
Graphite electrodesMuaj nyob rau hauv ntau qib kawm, txhua tus nrog cov khoom sib txawv thiab kev ua tau zoo. Cov qhab nia tseem ceeb yog:
- Lub zog tsis tu ncua (RP):Cov no yog cov qauv hluav taws xob tsim nyog rau cov cub hluavtaws me me nrog qis zog xav tau.
- Muaj Zog Muaj Zog (HP):Cov hluav taws xob no yog tsim los rau cov hluav taws xob hluav taws xob ntau dua thiab muab cov hluav taws xob txhim kho hluav taws xob thiab cua sov kev tawm tsam piv rau RP electrodes.
- Ultra siab zog (UHP):Cov no yog cov khoom siv hluav taws xob zoo tshaj plaws, tsim los ntawm hwmKoob cokethiab tsim rau cov haujlwm ehaf tshaj plaws. UHP Electrodes Ua Ntej Ua Ntej Cov Kev Ua Haujlwm Zoo Tshaj Plaws hauv Cov Kev Lag Luam Hluav Taws Xob, Thermal poob siab kuj, thiaboxidationKuj.
Qhov kev xaiv ntawm cov qib electrode nyob ntawm qhov kev xav tau ntawm covqho cubThiab tussteelmakingtxheej txheem. Siv cov qib raug yog qhov tseem ceeb rau kev ua tiav cov kev ua tau zoo thiab txo qiskev noj electrodeCov. Siv UHP Electrode nyob rau hauv lub zog-zogqho cubyuav tsis kim, thaum siv RP electrode nyob rau hauv lub siab-zogqho cubyuav ua rau ntau dhaukev nojthiab muaj peev xwmkev txhaum.
Kuv tuaj yeem xaiv cov khoom xa mus rau graphite hluav taws xob?
Xaiv cov khoom xa tuaj rauGraphite electrodesyog qhov kev txiav txim siab tseem ceeb uas tuaj yeem cuam tshuam koj EAF ua haujlwm. Xav txog cov hauv qab no:
- Lub koob npe nrov thiab kev paub:Xaiv ib qho chaw muag khoom nrog cov ntaub ntawv pov thawj cov ntaub ntawv thiab kev paub ntau hauv kev lag luam.Allen los ntawm Tuam Tshoj, nrog 7 cov kab ntau lawm, sawv cev rau qhov khoom siv txhim khu kev qha no.
- Khoom Zoo:Nco ntsoov tias tus xa khoom muaj cov hluav taws xob zoo uas tau raws li cov qauv thoob ntiaj teb thiab koj cov kev xav tau tshwj xeeb.Tsom rau cov yam ntxwv zoo li hluav taws xob tsis kam, siab thermal conductivity, thiab oxidation zoo heev.
- Kev Txhawb Nqa:Xaiv ib qho chaw xa khoom uas muab kev txhawb nqa zoo heev thiab tuaj yeem pab koj nrog xaiv electrode,qho cubKev ua kom zoo, thiab daws teeb meem.Qhov chaw nyob no cim rau lub sijhawm mob ntawm qhov tsis muaj kev txawj ntse kev txawj ntse.
- Logistics thiab tub yug:Xyuas kom meej tias tus neeg xa khoom muaj peev xwm txhim tsa logistics thiab tuaj yeem xa cov electrodes raws sijhawm kom tsis txhob muaj kev nce ntxiv.Qhov chaw nyob ncaj qha cim kev txhawj xeeb txog kev xa khoom qeeb.
- Muaj ntawv pov thawj:Txheeb xyuas tias tus xa khoom muaj cov ntawv pov thawj tsim nyog, xws li ISO cov qauv, kom ntseeg tau cov khoom zoo thiab ua raws.Qhov no nws tsis nco qab txog kev txhawj xeeb txog daim ntawv pov thawj kev dag.
- Tus nqi:Thaum tus nqi yog qhov tseem ceeb, nws yuav tsum tsis yog ib tus txiav txim siab qhov tseeb. Xav txog cov nqi tag nrho, suav nrog cov khoom lag luam zoo, kev pabcuam, thiab kev txhawb nqa.Kev lees paub Mark lub siab nyiam rau tus nqi sib tw thaum hais txog qhov tseem ceeb ntawm kev ua tau zoo.
- Kev sib txuas lus: Xyuas kom cov neeg xa khoom muaj ntau hom kev txhawb nqa thiab muaj nyob rau lub sijhawm koj ua haujlwm.Qhov chaw nyob no cim lub ntsiab lus mob hais txog kev sib txuas lus tsis muaj peev xwm.
- Ntawv Sawv cev: Nug thiab tshawb xyuas cov ntawv pov thawj los ntawm lwm cov neeg siv khoom.
Los ntawm ua tib zoo saib cov xwm txheej no, koj tuaj yeem xaiv ib tus neeg xa khoom uas ua tau raws li koj cov kev xav tau thiab pab koj ua tiavGraph kaw electrodekev ua tau zoo. Ua haujlwm nrog cov khoom siv txhim khu kev qha zoo li Allen lub Hoobkas nyob hauv Suav teb, uas xa tawm rau cov khw muag khoom teb chaws Asmeskas, Europe tuaj yeem muaj kev thaj yeeb nyab xeeb ntawm lub siab thiab kom muaj kev thaj yeeb zoo ib yam thiab muab tau zoo.
Ob peb lub sijhawm tawm tshiab yog cov duab tom ntej ntawmGraphite electrodesHauv EAFsteelmaking:
- Nce nce qhov kev thov rau UHP cov hluav taws xob:Raws li EAFs ua loj dua thiab muaj zog dua, qhov kev thov rau UHP cov hluav taws xob, uas tuaj yeem tswj hwm qhov ntau dua tam sim no thiab muaj kev loj hlob zoo dua qub.
- Tsom rau Sustainability:TussteelmakingKev lag luam yog nyob rau hauv nce siab kom txo nws cov kev cuam tshuam ib puag ncig. Qhov no yog kev tshawb nrhiav tsav tsheb thiab kev loj hlob mus ua ntau duaGraph kaw electrodeCov txheej txheem ntau lawm thiab cov ntaub ntawv, xws li bio-based binders thiab rov ua dua tshiab graphite.
- Advanced Txheej Txheej:Kev txhim kho ntawm ntau cov txheej txheem tiv thaiv oxidation yog txuas ntxiv, tsom mus rau txuas ntxiv txuas ntxiv lub neej thiab txokev noj.
- Cov Electrodes Smorm:Kev sib koom ua ke ntawm sensors thiab cov ntaub ntawv analytics rau hauvGraphite electrodesraug tshawb nrhiav. "Ntse" Electrodes tuaj yeem muab cov ntaub ntawv tiag tiag ntawm cov kev mob elotcrero thiab kev ua tau zoo, ua kom zoo dua kev tswj hwm ntawm EAF txheej txheem.
- Kev tso tshuab ua: Kev siv tshuab nce hauv electrode tuav thiab hloov pauv los txhim kho kev nyab xeeb thiab ua haujlwm.
- Lwm Yam Khoom Noj Raw: Kev tshawb fawb tau ua rau kev siv cov ntaub ntawv raw edit Lwm cov khoom siv los txo kev cia siab rau roj av coke.
Cov ncauj lus no qhia tau txuas ntxiv rau kev txhim kho cov khoom siv hluav taws xob, txo qiskev noj, thiab txhim kho cov kev ruaj khov ntawm EAFsteelmaking.

Tseem Ceeb Takaways
- Graphite electrode Kev Sivyog qhov tseem ceeb tshaj plaws hauv eaf statmaking, kev cuam tshuam nqi, kev ua tau zoo, thiab ib puag ncig hneev.
- Tustej yam tseem ceebcuam tshuam rau kev noj yog cov khoom hluav taws xob,qho cubKev khiav hauj lwm tsis, thiab oxidation.
- Xaiv cov txiaj ntsig zooGraphite electrodes, optimizingqho cubkev ua haujlwm, thiab txo qisoxidationyog qhov tseem ceeb rau kev txo qis.
- Khoom siv hluav taws xobkev txhaumMuaj peev xwm nce kev haus thiab yuav tsum tiv thaiv tau.
- Xaiv cov khoom siv txhim khu kev qha nrog cov ntaub ntawv pov thawj ua pov thawj, cov khoom lag luam zoo, thiab kev txhawb nqa zoo yog qhov tseem ceeb heev.
- Nkag siab lubsmelting thiab txheej txheem ntawm hluav taws xob arc rauvyog qhov tseem ceeb rau kev tswj hwmTau Siv Cov Hluav Taws Xob.
- TusCov Hluav Taws Xob Cov Hluav Taws Xobthiab lawv cov tsis muaj feem xyuamGraphite hluav taws xob hauv hluav taws xobarc rauv.
- Tsis tu ncua tiam sis, zoo li ntau siv UHP siv thiab tsom rau kev ruaj khov, yuav hloov lub neej tom ntej ntawm graphite electrodes.
- Saib xyuas thiab txhim kho electrodeKev noj ibNyhav ib toos ntawm cov hlau tsim tawm yog qhov tseem ceeb heev.
- Los ntawm kev nkag siab cov kev sib raug zoo ntawmKev noj cov graphiteThiab tusNtau YamKev Koom Tes, EAF cov neeg ua haujlwm tuaj yeem ua rau cov kev txiav txim siab los txhim kho kev ua tau zoo thiab txo tus nqi.
- Kev nrhav kev nrhav tom ntej yuav txuas ntxiv mus daws cov kev cov nyom thiabua rau me meTab sis tseem ceeb txhim kho ntawm kev txo qisKev noj ntau dhaunyob rau hauv kev lag luam.
Los ntawm kev siv cov kev coj ua zoo tshaj plaws thiab nyob hauv kev paub txog kev lag luam tiam sis, steel mills tuaj yeem ua tiav tau zooGraph kaw electrodekev ua tau zoo thiab pab txhawb rau cov neeg muaj kev ruaj khov ntau duasteelmakingkev lag luam.
Rau ntau ntxivGraph kaw electrode, Xav tias dawb los xyuas peb lub vev xaib. Peb kuj muabGraphite blocks, thov kom nug rau cov lus hais. Koj tseem tuaj yeem kawm paub ntau ntxiv txogGraphitecite electrode nqi per tuj 2024 hloov tshiab
(Nco tseg: Dioda.json thiab imageS_URL array tsis tau muab URLs thiab ALT cov lus xav tau thiab cov ntsiab lus hnov mob thoob plaws hauv tsab xov xwm, raws li tau thov.)
Sijhawm Post: 03-25-2025