Cov Tshuab Khaws Cia Hluav Taws Xob Siab Rau Lub Hnub Ci Thiab Lub Zog Muaj Zog Zoo

Cov Tshuab Khaws Cia Hluav Taws Xob Siab Rau Lub Hnub Ci Thiab Lub Zog Muaj Zog Zoo

Nkag Siab Txog Cov Tshuab Khaws Cia Hluav Taws Xob High Voltage

Cov Tshuab Khaws Cia Hluav Taws Xob Siab (HVESS) tab tom hloov pauv peb txoj kev khaws cia thiab tswj hwm lub zog kom zoo. Hauv lawv lub hauv paus, HVESS vam khom rauCov roj teeb LiFePO4—lithium hlau phosphate chemistry paub txog lub neej ntev, kev ruaj khov thermal zoo heev, thiab kev nyab xeeb ib puag ncig. Cov roj teeb no ua ke nrog ib qhoKev Tswj Xyuas Roj Teeb Siab Tshaj Plaws (BMS)uas saib xyuas qhov voltage, kub, thiab tam sim no tas li kom ua tau zoo tshaj plaws thiab tiv thaiv kev ua yuam kev.

Ib feem tseem ceeb ntawm HVESS yogLub Tshuab Hloov Fais Fab (PCS), uas hloov cov zog DC khaws cia rau hauv lub zog AC siv tau uas haum rau lub grid lossis lub tsev inverters. HVESS ua tiav cov hluav taws xob siab los ntawm kev txuas cov roj teeb hauv series, txhawb lawv cov zis kom phim cov grid lossis inverter xav tau seamlessly. Qhov nokev sib txuas ua keoptimizes lub zog hloov pauv thiab txo qhov poob piv rau cov teeb tsa qis-voltage.

Qhov kev hloov pauv ntawm kev khaws cia hluav taws xob qis mus rau HVESS yog tsav los ntawm qhov xav tau kev ua haujlwm zoo dua, kev nthuav dav, thiab kev txuag nqi. Cov kab ke hluav taws xob siab txo cov kab hlau tuab, kev poob cua sov, thiab txhim kho kev tswj hwm hluav taws xob, ua rau lawv zoo tagnrho rau cov kev xav tau hluav taws xob niaj hnub no.

PROPOW'sCov modules LiFePO4 uas tsis muaj cobaltsawv tawm ua ib qho kev xaiv txhim khu kev qha, zoo rau ib puag ncig hauv qhov chaw no. Cov chav tsev sib dhos ua ke no muab kev ua haujlwm siab thiab kev nyab xeeb thaum txhawb nqa kev khaws cia hluav taws xob uas nthuav dav - zoo meej rau cov haujlwm hauv tsev, kev lag luam, thiab cov khoom siv hluav taws xob.

Kev Khaws Cia Hluav Taws Xob Siab vs. Kev Khaws Cia Hluav Taws Xob Qis

Thaum piv rau cov tshuab khaws cia hluav taws xob siab (HV) thiab qis hluav taws xob (LV), kev ua haujlwm zoo yog qhov tseem ceeb. Cov tshuab HV muaj qhov zoo dua vim tias lawv txo qhov poob ntawm cov xov hlau. Kev khiav ntawm cov hluav taws xob siab dua txhais tau tias muaj hluav taws xob tsawg dua rau tib lub zog, uas txo cov cua sov tsim thiab cov zog pov tseg uas feem ntau pom hauv LV teeb tsa. Qhov no txhais tau tias muaj hluav taws xob siv tau ntau dua nrog kev ntxhov siab tsawg dua.

Hais txog tus nqi, cov kab ke HV feem ntau xav tau kev nqis peev pib siab dua vim yog cov khoom tshwj xeeb xws li cov kab ke tswj roj teeb siab heev (BMS) thiab cov kab ke hloov hluav taws xob (PCS). Txawm li cas los xij, cov nqi them ua ntej no tau sib npaug raws sijhawm los ntawm cov nqi ua haujlwm qis dua - feem ntau yog los ntawm kev txuag hluav taws xob thiab txo qis kev xav tau kev saib xyuas. Qhov rov qab los ntawm kev nqis peev mus sij hawm ntev feem ntau zoo dua nrog cov kev daws teeb meem HV.

Kev nthuav dav yog lwm qhov sib txawv tseem ceeb. Cov khoom siv hluav taws xob siab, xws li PROPOW's modular LiFePO4 roj teeb pob, yog tsim los tswj cov kev xav tau hluav taws xob loj dua thiab tuaj yeem nthuav dav tau yooj yim. Cov kab ke hluav taws xob qis feem ntau yuav ncav cuag cov kev txwv sai dua, ua rau HV zoo dua rau kev lag luam, kev lag luam, thiab kev siv hluav taws xob.

Nov yog kev sib piv cov lus qhia ceev ceev uas muaj PROPOW cov stackable high voltage modules:

Feature Hluav Taws Xob Siab (PROPOW) Hluav Taws Xob Tsawg
Qhov Voltage Ntau Yam Txog li 1000V+ Feem ntau nyob rau hauv 60V
Zog Ceev Siab dua vim yog series stacking Qis dua vim muaj kev txwv sib luag
Kev Poob Cable Tsawg, tsawg dua cua sov tsim tawm Siab dua, ntau cua sov thiab pov tseg
Kev nthuav dav Kev yooj yim modular stacking Txwv los ntawm kev txuas hluav taws xob thiab tam sim no
Tus nqi pib Siab dua tab sis muaj cov thev naus laus zis siab heev Qis dua pem hauv ntej
Kev Txuag Nyiaj Mus Ntev Tseem ceeb (zog + kev saib xyuas) Tsis tshua muaj txiaj ntsig zoo dhau sijhawm

PROPOW cov khoom siv khaws cia hluav taws xob uas sib dhos tau muab txoj hauv kev txhim khu kev qha los nthuav koj lub kaw lus yam tsis muaj kev cuam tshuam kev ua haujlwm zoo lossis kev nyab xeeb. Yog xav paub cov lus qhia ntxaws thiab cov kev xaiv, mus saib lawvstackable high voltage roj teeb modulesQhov no ua rau HV systems yog qhov kev xaiv ntse rau cov neeg uas tab tom nrhiav kev txhim kho lawv cov peev txheej khaws cia hluav taws xob.

Cov txiaj ntsig tseem ceeb ntawm kev khaws cia hluav taws xob siab

Cov tshuab khaws cia hluav taws xob siab (HVESS) coj ntau yam zoo uas ua rau lawv yog qhov kev xaiv ntse rau cov tsev, cov lag luam, thiab cov khoom siv hluav taws xob. Nov yog saib sai sai:

Kev Txhim Kho Zog

  • Kev Siv Hluav Taws Xob Hnub Ci:HVESS khaws cov zog hnub ci ntau dhau rau kev siv thaum lub hnub tsis ci, txo qhov kev siv hluav taws xob hauv lub network.
  • Kev txiav plaub hau zoo tshaj plaws:Txo cov nqi hluav taws xob los ntawm kev tso tawm cov zog khaws cia thaum lub sijhawm muaj neeg xav tau ntau tshaj plaws.
  • Kev Txiav Txim Txog Zog:Yuav cov fais fab pheej yig, khaws cia, thiab siv lossis muag nws rau tus nqi siab dua tom qab.

Kev Ntseeg Tau thiab Lub Hwj Chim Thaub Qab

  • Muab kev thaub qab tsis muaj teeb meem thaum lub sijhawm tsis muaj hluav taws xob.
  • Txhawb nqa cov khoom tseem ceeb nrog lub zog ruaj khov, siab-voltage.
  • Cov txheej txheem tswj roj teeb siab heev ua kom muaj kev ua haujlwm ntev thiab txhim khu kev qha.

Kev Cuam Tshuam Ib puag ncig

  • Txhawb kev koom ua ke ntawm cov khoom siv rov ua dua tshiab los ntawm kev khaws cia lub zog huv los ntawm lub hnub ci lossis cua.
  • Siv cov khoom siv roj teeb uas siv tau dua tshiab, xws li lithium iron phosphate, rau kev pov tseg uas ntsuab dua.
  • Txo cov pa roj carbon dioxide los ntawm kev siv hluav taws xob kom zoo dua.

Kev Ntsuas Kev Nyab Xeeb

  • Ua-hauvkev sib npaugkhaws cov hluav taws xob ntawm tes txawm tias rau kev ua haujlwm zoo.
  • Zoo sivkev tswj hwm thermaltiv thaiv kev kub dhau thiab ua kom lub roj teeb siv tau ntev dua.
  • Ua raws li cov qauv kev nyab xeeb nruj rau kev siv hauv tsev thiab kev lag luam.
Kev Pab Cov ntsiab lus
Kev Siv Hluav Taws Xob Hnub Ci Siv zog hnub ci ntau tshaj plaws hauv tsev
Kev Txiav Plaub Hau Zoo Tshaj Plaws Txo cov nqi hluav taws xob thaum lub sijhawm siab tshaj plaws
Fais fab thaub qab Lub zog txhim khu kev qha thaum lub sijhawm tsis muaj hluav taws xob
Kev Cuam Tshuam Ib puag ncig Txhawb nqa cov khoom siv rov ua dua tshiab, cov khoom siv rov ua dua tshiab
Kev Nyab Xeeb BMS siab heev, kev tswj cua sov, kev ua raws li txoj cai

PROPOW cov khoom siv hluav taws xob siab uas tuaj yeem sib dhos ua ke ua ke cov txiaj ntsig no nrog kev tsim qauv tshiab thiab cov yam ntxwv kev nyab xeeb, ua rau lawv yog qhov kev xaiv zoo rau cov neeg siv khoom hauv Tebchaws Meskas uas tab tom nrhiav kev daws teeb meem hluav taws xob zoo thiab txhim khu kev qha. Nrhiav paub ntxiv txog pebCov roj teeb LiFePO4 siab heevtsim los rau koj cov kev xav tau zog.

Cov ntawv thov ntawm High Voltage Energy Storage Systems

Cov tshuab khaws cia hluav taws xob siab (HVESS) tab tom hloov txoj kev tswj hwm lub zog thoob plaws cov tsev, cov lag luam, thiab cov khoom siv hauv Tebchaws Meskas Nov yog qhov uas lawv ci ntsa iab:

Kev daws teeb meem thaub qab tag nrho hauv tsev

HVESS muab lub zog thaub qab txhim khu kev qha rau tag nrho lub tsev, ua kom lub teeb, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob tseem ceeb khiav thaum lub sijhawm tsis muaj hluav taws xob. Lawv txoj kev tsim hluav taws xob siab txhais tau tias ua haujlwm tau zoo dua, ua haujlwm ntev dua, thiab yooj yim dua rau kev sib txuas nrog cov teeb tsa hnub ci hauv tsev.

Kev Tswj Xyuas Kev Xav Tau Ntau Tshaj Plaws Hauv Kev Lag Luam Thiab Kev Lag Luam

Rau cov lag luam, kev tswj hwm cov nqi zog yog qhov tseem ceeb heev. HVESS pab txo qhov kev xav tau siab tshaj plaws - khaws cia lub zog thaum tus nqi qis thiab siv nws thaum lub sijhawm siab tshaj plaws. Qhov no txo ​​cov nqi hluav taws xob thiab txhim kho qhov zoo ntawm lub zog tag nrho.

Kev Ruaj Ntseg ntawm Lub Grid thiab Kev Teb Zaus ntawm Utility-Scale

Cov chaw muab hluav taws xob siv HVESS los sib npaug ntawm kev muab hluav taws xob thiab kev thov hluav taws xob ntawm qhov loj. Cov kab ke no nqus cov hluav taws xob rov ua dua tshiab ntau dhau thiab tso tawm sai sai thaum xav tau, ua kom lub grid ruaj khov thiab ua kom lub zog hluav taws xob ruaj khov kom tsis txhob muaj kev puas tsuaj thiab kev puas tsuaj.

Kev Siv Tshiab: EV Fleet Charging thiab Microgrids

HVESS kuj tau txais kev nyiam hauv cov cheeb tsam tshiab xws li kev them fais fab rau cov tsheb fais fab (EV), qhov twg kev khaws cia uas yooj ywm thiab muaj zog siab txhawb nqa kev them ceev thiab txhim khu kev qha yam tsis muaj kev ntxhov siab rau lub grid. Tsis tas li ntawd, microgrids nrog cov chaw teeb tsa voltage hloov tau vam khom HVESS rau lub zog ruaj khov thiab nthuav dav uas haum rau cov kev xav tau hauv zos.

Hauv txhua qhov xwm txheej no, cov roj teeb LiFePO4 siab thiab cov modules khaws cia lub zog sib dhos ua ke muab lub hauv paus rau kev daws teeb meem uas nthuav dav, ua haujlwm tau zoo, thiab tsim nyog rau kev xav tau lub zog hauv Tebchaws Meskas.

Cov Teeb Meem, Kev Nyab Xeeb, Kev Teeb Tsa, thiab Kev Txij Nkawm

Cov tshuab khaws cia hluav taws xob siab (HVESS) muaj lawv cov teeb meem, tshwj xeeb tshaj yog nyob ib puag ncig kev ntxhov siab ntawm hluav taws xob thiab ua raws li cov cai nruj. Kev teeb tsa hluav taws xob siab yuav tsum tau tsim qauv zoo kom tsis txhob muaj kev ntxhov siab ntau dhau ntawm cov roj teeb thiab cov khoom, uas tuaj yeem cuam tshuam rau lub neej thiab kev nyab xeeb. Kev siv cov cai hauv zos thiab cov qauv yog qhov tseem ceeb rau kev teeb tsa raws li txoj cai.

PROPOW daws cov teeb meem no nrog nws lub High Voltage Battery Management System (HV-BMS) uas siab heev. Lub kaw lus no muab kev kuaj pom qhov txhaum tiag tiag thiab kev saib xyuas deb, pab ntes cov teeb meem thaum ntxov. Nws ua kom koj cov modules khaws cia hluav taws xob uas sib dhos tau nyob ruaj ntseg thiab ua haujlwm tau zoo thaum lub sijhawm ua haujlwm.

Kev teeb tsa nrog PROPOW cov kev daws teeb meem yooj yim tab sis ua tiav:

  • Kev ntsuam xyuas qhov chawtxiav txim siab txog qhov muaj peev xwm thiab qhov chaw teeb tsa
  • Kev tsim qauvtsim rau koj lub tsev lossis kev lag luam xav tau
  • Kev teeb tsa tshaj lijua raws li cov txheej txheem kev nyab xeeb
  • Kev ua haujlwm thiab kev simua ntej yuav mus nyob

Kev saib xyuas yooj yim tab sis tseem ceeb heev rau kev siv lub neej ntev tshaj plaws:

  • Ib txwmkev saib xyuas lub voj vooglos taug qab kev noj qab haus huv ntawm lub roj teeb
  • Raws sijhawmcov hloov tshiab firmwarekom BMS zoo tshaj plaws
  • Ntshiabkev pov hwm lavmuab kev thaj yeeb ntawm lub siab

Nrog PROPOW cov kev daws teeb meem, koj tau txais kev txhawb nqa zoo kom koj lub zog cia hluav taws xob siab khiav tau zoo thiab muaj kev nyab xeeb - rau kev teeb tsa hauv tsev, kev lag luam, lossis kev teeb tsa hauv qhov loj.

PROPOW Cov Kev daws teeb meem siab voltage

PROPOW muaj cov khoom siv khaws cia hluav taws xob siab uas tuaj yeem sib dhos ua ke tau los ua kom yooj yim thiab ua tau zoo. Lawv cov qauv tsim modular cia koj teeb tsa koj lub kaw lus tau yooj yim - txawm tias siv rau hauv tsev, kev lag luam, lossis kev siv hluav taws xob. Cov ntsiab lus tseem ceeb suav nrog cov roj teeb LiFePO4 siab nrog BMS (Battery Management System), uas tau kho kom zoo rau lub neej ntev thiab kev nyab xeeb.

Kev Txuag Nyiaj thiab Kev Ua Tau Zoo Uas Tau Pom Zoo

Cov kev tshawb fawb txog lub neej tiag tiag txhawb nqa PROPOW cov lus thov: cov neeg siv khoom tshaj tawm tias lawv txuag tau nyiaj ntau los ntawm kev siv hluav taws xob zoo dua, txo qhov siv hluav taws xob ntau tshaj plaws, thiab kev siv hluav taws xob hnub ci. Cov lag luam txaus siab rau cov nqi siv hluav taws xob tsawg dua, thaum cov neeg siv khoom hauv tsev tau txais txiaj ntsig los ntawm lub zog thaub qab txhim khu kev qha thiab kev siv hluav taws xob hnub ci ntau dua.

Vim li cas ho xaiv PROPOW?

  • Kev Kho Kom Haum:Cov qhov loj me ntawm pawg thiab cov teeb tsa hluav taws xob kom haum rau koj cov kev xav tau tshwj xeeb.
  • Cov Ntawv Pov Thawj:Ua tau raws li cov qauv kev nyab xeeb thiab kev ua tau zoo hauv Tebchaws Meskas rau kev thaj yeeb nyab xeeb.
  • Kev Pabcuam Rau Cov Neeg Siv Khoom:Kev saib xyuas deb ntawm cov kws tshaj lij, kev kuaj pom qhov yuam kev, thiab kev pabcuam teb sai.

Npaj txhij hloov kho koj qhov chaw cia hluav taws xob? Hu rau PROPOW hnub no kom tau txais kev sab laj dawb thiab nrhiav qhov system cia hluav taws xob siab zoo tshaj plaws rau koj lub tsev lossis kev lag luam.

Cov Qauv Yav Tom Ntej thiab Kev Tsim Kho Tshiab hauv Kev Khaws Cia Hluav Taws Xob High Voltage

Kev lag luam khaws cia lub zog hluav taws xob siab tab tom loj hlob thoob ntiaj teb, tshwj xeeb tshaj yog nyob rau hauv Suav teb thiab Tebchaws Europe, qhov twg cov haujlwm loj tab tom thawb cov kev txwv ntawm lub peev xwm thiab kev ua haujlwm zoo. Cov cheeb tsam no tab tom teeb tsa qhov kev nrawm, qhia txog kev loj hlob ntawm kev lag luam uas tam sim no cuam tshuam rau Asmeskas kev siv HVESS thev naus laus zis.

Los ntawm qhov pom ntawm thev naus laus zis, peb pom cov kev tsim kho tshiab zoo li cov qauv tsim grid-forming - cov no pab cov roj teeb sib cuam tshuam ntse dua nrog lub grid kom ruaj khov dua. Cov khoom sib xyaw Sodium-ion kuj tau txais kev rub tawm ua lwm txoj hauv kev zoo rau kev khaws cia lithium hlau phosphate ib txwm muaj, muab cov txiaj ntsig zoo rau kev siv nyiaj thiab kev ruaj khov. Ntxiv mus, AI-powered energy management systems (EMS) tab tom dhau los ua qhov hloov pauv kev ua si, ua kom zoo dua qhov kev ntws ntawm lub zog kom txo cov nqi thiab txhim kho kev ntseeg tau.

Nyob rau sab nraud ntawm txoj cai, cov nyiaj pab xws li US Inflation Reduction Act (IRA) cov nyiaj txo se ua rau kev siv cov kev daws teeb meem khaws cia hluav taws xob siab sai dua. Cov nyiaj pab no ua rau kev nqis peev rau hauv HVESS siab dua pheej yig dua, txhawb kom cov tswv tsev, cov lag luam, thiab cov chaw muab kev pabcuam hloov kho lawv cov kev teeb tsa hluav taws xob.

PROPOW ua ntej ntawm qhov nkhaus nrog nws cov chav 1000V+ scalable tsim rau cov grids tom ntej. Cov kev daws teeb meem no txhawb nqa kev xa tawm loj dua, yooj ywm dua uas ua tau raws li qhov xav tau hloov pauv - txawm tias qhov ntawd yog grid stabilization, kev koom ua ke rov ua dua tshiab, lossis kev lag luam hluav taws xob arbitrage.

Cov qauv tseem ceeb yav tom ntej:

  • Kev loj hlob ntawm kev ua lag luam uas tsav los ntawm Tuam Tshoj thiab Tebchaws Europe cov haujlwm loj HVESS
  • Grid-forming topologies txhim kho kev txhawb nqa grid
  • Cov kev sib xyaw ua ke ntawm Sodium-ion nthuav dav cov kev xaiv roj teeb
  • AI EMS txhim kho kev siv hluav taws xob zoo thiab kev tswj hwm
  • Cov nyiaj pab them se IRA txhawb nqa kev siv nyiaj hauv Asmeskas
  • PROPOW cov khoom siv 1000V+ uas tuaj yeem nthuav dav tau npaj rau cov phiaj xwm yav tom ntej

Nrog rau cov qauv no, cov tshuab khaws cia hluav taws xob siab tau teeb tsa los ua lub hauv paus tseem ceeb ntawm Asmeskas lub neej yav tom ntej huv si, txhim khu kev qha, thiab siv tau zoo.

Cov Lus Nug Feem Ntau Txog Kev Khaws Cia Hluav Taws Xob High Voltage

Cov theem voltage twg txhais tau tias lub kaw lus khaws cia hluav taws xob siab?

Cov tshuab khaws cia hluav taws xob siab (HVESS) feem ntau pib ntawm kwv yees li 400 volts thiab tuaj yeem mus siab dua 1000 volts. PROPOW cov roj teeb LiFePO4 uas tuaj yeem sib dhos tau feem ntau khiav ntawm 400V txog 800V, ua rau lawv zoo tagnrho rau kev teeb tsa hauv tsev thiab kev lag luam. Qhov hluav taws xob siab dua no cia lub kaw lus txuas tau zoo rau cov inverters sib txuas thiab tswj cov khoom siv hluav taws xob loj dua nrog kev poob hluav taws xob tsawg dua.

Puas yog HVESS muaj kev nyab xeeb rau kev siv hauv tsev?

Yog, HVESS los ntawm PROPOW muaj kev nyab xeeb rau kev siv hauv tsev. Advanced Battery Management Systems (BMS) saib xyuas kev noj qab haus huv ntawm lub cell, qhov sib npaug ntawm lub zog, thiab cov xwm txheej kub kom tiv thaiv kev kub dhau lossis ua yuam kev. PROPOW kuj ua tau raws li cov qauv kev nyab xeeb nruj ntawm Tebchaws Meskas thiab suav nrog cov yam ntxwv xws li kev kuaj pom qhov yuam kev thiab kev saib xyuas deb kom ntseeg tau tias kev ua haujlwm txhim khu kev qha. Kev teeb tsa kom raug los ntawm cov kws tshaj lij tau ntawv pov thawj yog qhov tseem ceeb rau kev tswj hwm kev nyab xeeb.

PROPOW muaj cov txiaj ntsig zoo li cas piv rau cov neeg sib tw?

  • Cov hlwb LiFePO4 uas tsis muaj cobaltmuab lub neej ntev dua thiab zoo dua thermal stability
  • Cov qauv modular, stackablerau kev yooj yim scalability thiab muaj peev xwm hloov pauv tau
  • HV-BMS siab heevnrog rau kev kuaj pom qhov txhaum tiag tiag thiab kev txhawb nqa nyob deb
  • Kev lees paub zoo thiab kev pabcuam rau cov neeg siv khoom hauv Tebchaws Meskasrau kev txhawb nqa sai dua
  • Kev sib tw nqi uas sib npaug cov nqi ua ntej thiab tus nqi mus sij hawm ntev

Cov lus nug ntxiv uas nquag nug

HVESS txhim kho kev siv hluav taws xob hnub ci li cas?

Los ntawm kev khaws cia lub zog hnub ci ntau dhau ntawm qhov hluav taws xob siab, koj tuaj yeem txo qhov kev vam khom rau lub grid, ua kom zoo dua kev siv tus kheej, thiab txo cov nqi hluav taws xob los ntawm kev txo cov nqi hluav taws xob siab tshaj plaws thiab kev siv sijhawm ntau dhau.

Yuav tsum tau saib xyuas dab tsi?

Kev saib xyuas lub voj voog tas li thiab kev hloov kho firmware ua rau lub kaw lus ua haujlwm tau zoo. PROPOW muab kev kuaj mob deb thiab kev txhawb nqa warranty rau kev thaj yeeb nyab xeeb.

HVESS puas tuaj yeem tswj hwm qhov hluav taws xob tsis ua haujlwm?

Kiag li. HVESS muab kev thaub qab tag nrho hauv tsev uas txhim khu kev qha thiab txhawb nqa cov khoom tseem ceeb thaum lub sijhawm tsis muaj hluav taws xob ua tsaug rau kev sib koom ua ke nrog cov inverters thiab cov maub los.

Yog tias koj xav paub ntau ntxiv txog PROPOW cov kev daws teeb meem khaws cia hluav taws xob siab, hu rau kev sab laj dawb uas tsim los rau koj cov kev xav tau hluav taws xob.


Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2025