+86-13791972057
No. 3009, Ntauwd 3, Zhuoyue Century Center, No. 31th Longcheng Road, Qingdao, Shandong, Suav teb
+86-13791972057

2026-08-21 : kuv
Ib industrial electric steam generator yog ib tug high-efficiency, compact boiler system uas converts hluav taws xob lub zog rau hauv thermal zog los tsim saturated los yog superheated chav. Tsis zoo li cov fossil-roj boilers ib txwm muaj, cov chav no muab xoom rau ntawm qhov chaw emissions, tswj lub siab meej, thiab lub sijhawm pib sai, ua rau lawv zoo tagnrho rau 2026 kev tsim khoom ib puag ncig tsom rau kev ruaj khov thiab kev ua haujlwm zoo. Rau cov lag luam nrhiav ib qho hluav taws xob chav generator industrial kev daws teeb meem, Hoobkas ncaj qha kev yuav khoom hauv 2026 muab cov txiaj ntsig zoo los ntawm kev tshem tawm cov cim nruab nrab thaum ua kom ntseeg tau ncaj qha rau kev pabcuam kev cai engineering thiab kev pab cuam warranty.
Lub tshuab hluav taws xob muaj hluav taws xob muaj hluav taws xob yog lub nkoj siab tsim los tsim cov chav siv hluav taws xob cua sov cov ntsiab lus es tsis yog combustion. Cov txheej txheem tseem ceeb suav nrog kev hla cov hluav taws xob tam sim no los ntawm cov khoom cua sov tiv taus submerged hauv dej. Cov txheej txheem no tsim cov cua sov, uas hloov mus rau hauv dej, ua rau nws boil thiab ua kom muaj zog. Tom qab ntawd cov chav yog sib cais los ntawm cov dej tee dej thiab tso tawm ntawm qhov xav tau siab thiab kub rau cov ntawv thov kev lag luam.
Hauv 2026, qhov kev thov rau hluav taws xob chav generator industrial Cov chav nyob tau nce siab vim muaj kev tswj hwm ib puag ncig nruj dua thiab kev hloov pauv thoob ntiaj teb rau kev siv hluav taws xob hauv kev tsim khoom. Cov tshuab no txawv ntawm cov boilers ib txwm siv vim tias lawv tsis xav tau cov roj cia, cov khoom siv hluav taws xob, lossis cov tshuab cua sib xyaw ua ke. Qhov kev ua kom yooj yim no txo cov hneev taw ntawm cov cuab yeej siv thiab txo qis tus nqi teeb tsa.
Nkag siab txog kev tsim vaj tsev sab hauv ntawm lub tshuab hluav taws xob hluav taws xob yog qhov tseem ceeb rau kev saib xyuas thiab kev ua haujlwm zoo. Lub system muaj ntau yam tseem ceeb:
Lub hauv paus ntsiab lus ntawm kev ua haujlwm yog ncaj nraim tab sis muaj txiaj ntsig zoo. Thaum lub kaw lus qhib, cov tswj vaj huam sib luag qhia cov cua sov kom muaj zog. Raws li cov dej kub nce, chav ua haujlwm. Pressure sensors tsis tu ncua saib xyuas lub nkoj lub siab sab hauv. Thaum lub teeb siab tau mus txog, tus maub los hloov lub zog rau cov cua sov, xws li kev caij tsheb kauj vab rau / tawm lossis kho lub zog tawm ntawm SCR (Silicon Controlled Rectifier) thev naus laus zis kom tswj tau lub xeev khov kho. Qhov kev tswj xyuas meej no yog qhov zoo dua ntawm cov roj lossis cov roj boilers, uas feem ntau raug kev txom nyem los ntawm kev hloov pauv siab vim yog kev sib tsoo lag luam.
Kev txiav txim siab hloov mus rau ib qho hluav taws xob chav generator industrial system feem ntau yog tsav los ntawm kev sib txuas ntawm kev tswj hwm, kev lag luam, thiab kev ua haujlwm. Xyoo 2026, kev them se cov pa roj carbon monoxide thiab emission txwv tau ua rau fossil-roj boilers kim dua rau kev khiav lag luam thiab tswj. Cov tshuab hluav taws xob muaj cov khoom siv huv huv uas ua raws li cov hom phiaj kev lag luam ruaj khov.
Hluav taws xob cov tshuab hluav taws xob khav theeb ze li 100% lub zog hloov pauv kev ua haujlwm. Yuav luag tag nrho cov hluav taws xob siv hluav taws xob tau hloov mus ua cua sov hauv dej. Hauv qhov sib piv, cov roj thiab cov roj boilers feem ntau ua tau zoo ntawm 80% thiab 95%, nrog lub zog tseem ceeb poob los ntawm cov pa taws thiab hluav taws xob. Txawm hais tias tus nqi hluav taws xob ib kWh tuaj yeem siab dua li cov nkev ib BTU hauv qee thaj tsam, tag nrho cov nqi ntawm cov tswv cuab (TCO) rau cov tshuab hluav taws xob tuaj yeem qis dua thaum kev saib xyuas, kev tuav pov hwm, thiab cov nqi ua raws cai.
Tsis tas li ntawd, cov tshuab hluav taws xob tsis tas yuav tsum muaj kev sib txuas txhua xyoo lossis kev tsom xam cov roj flue. Qhov no txo qhov zaus ntawm qhov yuav tsum tau kuaj xyuas thiab cov nqi ua haujlwm cuam tshuam. Rau cov chaw ua haujlwm hauv thaj chaw uas muaj kev nkag mus rau lub zog tauj dua tshiab, siv cov tshuab hluav taws xob hluav taws xob tso cai rau cov tuam txhab siv nyiaj ntsuab ntsuab, ntxiv dag zog rau lawv cov ntaub ntawv ib puag ncig.
Kev nyab xeeb yog qhov kev txhawj xeeb tseem ceeb hauv cov chaw lag luam. Cov tshuab hluav taws xob hluav taws xob tshem tawm cov kev pheej hmoo cuam tshuam nrog cov roj cia, xws li xau, nchuav, thiab tawg. Tsis tas yuav muaj cov roj tso tsheb hlau luam, cov kav dej, lossis lub tshuab ua pa rau cov cua combustion. Qhov no ua kom yooj yim rau cov txheej txheem installation thiab txo qhov kev pheej hmoo ntawm hluav taws kub.
Kev teeb tsa ntawm chav tsev hluav taws xob kuj tseem nrawm dua thiab cuam tshuam tsawg dua. Tsis tas yuav tsum muaj lub chimney lossis tso pa tawm, chav tsev tuaj yeem muab tso rau ze rau qhov chaw siv, txo cov cua sov hauv cov kav dej xaim. Qhov kev sib thooj no txhim kho tag nrho cov kev ua haujlwm ntawm lub cev thiab ua kom lub zog tuaj txog ntawm daim ntawv thov taw tes nrog kev poob siab tsawg.
| Feature | Fais Chav Generator | Gas / Roj Boiler |
|---|---|---|
| Zog Efficiency | ~ 98-99% | 80-95% |
| Cov pa tawm | Zero ntawm qhov chaw emissions | CO2, NOx, SOx |
| Installation complexity | Tsawg (Tsis muaj chimney / roj kab) | Siab (Qhov cua / roj cia) |
| Kev tu ntau zaus | Tsawg (Kev kuaj xyuas txhua xyoo) | High (Combustion tuning / Ntxuav) |
| Startup Sijhawm | Ceev (feeb) | Slow (teev rau sov so) |
| Lub suab nrov | Quiet (tsuas yog lub suab nrov nrov) | Suab nrov (Burner / kiv cua nrov) |
Lub versatility ntawm hluav taws xob chav generator industrial units ua rau lawv haum rau ntau yam kev lag luam. Lawv lub peev xwm los muab kev huv, qhuav, thiab tswj tau qhov tseeb yog qhov tseem ceeb hauv cov txheej txheem uas cov khoom zoo thiab kev nyiam huv yog qhov tseem ceeb.
Hauv kev lag luam zaub mov, chav ua noj yog siv rau kev ua noj, kom tsis muaj menyuam, thiab tu. Hluav taws xob cov tshuab hluav taws xob tsim cov pa ntshiab yam tsis muaj kev pheej hmoo ntawm kev kis kab mob los ntawm cov khoom siv roj. Qhov no yog qhov tseem ceeb rau kev tswj hwm cov qauv kev nyab xeeb khoom noj xws li HACCP thiab ISO 22000. Cov ntawv thov suav nrog:
Kev lag luam kws kho mob yuav tsum muaj cov pa ntshiab ntshiab rau kom tsis muaj menyuam thiab ua kom cov av noo. Cov tshuab hluav taws xob tuaj yeem nruab nrog qib siab stainless hlau Cheebtsam thiab ob-walled cua sov exchangers los tsim pyrogen-dawb chav. Qhov no ua tau raws li cov kev cai nruj ntawm GMP (Good Manufacturing Practice) cov cai. Cov tsev kho mob tseem siv cov tshuab hluav taws xob hluav taws xob rau kev ua kom tsis muaj menyuam cov cuab yeej phais thiab cov ntaub pua chaw, qhov kev ntseeg siab thiab kev huv yog tsis sib tham.
Chav tsev yog qhov tseem ceeb rau kev ua textile, suav nrog dyeing, xov, thiab ironing. Cov tshuab hluav taws xob ua hluav taws xob muab lub zog sib xws thiab qhov kub thiab txias, uas yog qhov tseem ceeb rau kev ua tiav cov xim sib xws thiab kev ntxhib los mos hauv cov ntaub. Hauv kev tsim cov khaub ncaws, cov tshuab hluav taws xob thiab cov xovxwm tso siab rau cov chav qhuav kom tsis txhob muaj dej thiab ua kom muaj kev ua tiav. Lub sij hawm teb ceev ceev ntawm cov khoom siv hluav taws xob tso cai rau kev tuav cov khoom sib txawv ntawm cov khoom sib txawv.
Hauv kev ua tshuaj lom neeg, ncu yog siv rau cov cua sov reactors, cov kab distillation, thiab cov cua kub exchangers. Hluav taws xob cov tshuab hluav taws xob muaj kev tswj xyuas qhov kub thiab txias, uas yog ib qho tseem ceeb rau cov tshuaj rhiab heev. Tsis tas li ntawd, hauv thaj chaw muaj kev phom sij uas qhib hluav taws raug txwv, cov tshuab hluav taws xob muab cov cua sov kom nyab xeeb. Lawv kuj tau siv rau cov kab cua kub ntawm cov kav dej thiab cov tso tsheb hlau luam kom tiv thaiv kom khov lossis tswj cov viscosity.
Steam curing accelerates cov txheej txheem hardening ntawm cov pob zeb, tso cai rau cov voj voog ntau lawm hauv cov nroj tsuag precast. Hluav taws xob cov tshuab hluav taws xob muab qhov chaw tswj hwm nrog cov av noo thiab kub, ua rau muaj zog dua thiab ua haujlwm ntev ntawm cov khoom ua vaj tse. Lawv portability thiab yooj yim ntawm installation ua rau lawv zoo tagnrho rau cov chaw tsim kho ib ntus.
Thaum ntsuam xyuas cov neeg muab khoom lag luam rau qhov tseem ceeb hauv kev lag luam, cov chaw tsim khoom lag luam tseem ceeb. Qingdao Xingfu Energy Equipment Ltd., tsim nyob rau hauv 2010 thiab headquartered nyob rau hauv Qingdao, Tuam Tshoj, piv txwv li cov ntsug kev koom ua ke thiab kev tob yuav tsum tau rau high-kev ua tau zoo chav daws teeb meem. Nrog ntau tshaj 14 xyoo ntawm kev ua lag luam tas mus li, Xingfu tau hloov zuj zus los ntawm cov neeg xa khoom hauv tsev mus rau lub ntiaj teb lees paub xa tawm ua haujlwm rau ntau tshaj 30 lub teb chaws, suav nrog kev lag luam hauv Europe, Asia, thiab dhau mus.
Tsis zoo li cov neeg xa khoom dav dav, Xingfu ua haujlwm loj heev 70,500-square-meter ntau lawm puag, muaj 21,000 square meters ntawm kev cob qhia. Qhov kev tsim kho vaj tse no txhawb nqa qhov kawg-rau-kawg tsim ntawm lawv cov flagship S-Series automation kev daws teeb meem - tag nrho automated electric steam generators thiab ntse chav boilers tsim los rau cov chav ceev ceev thiab cov kab ntau lawm. Lub tuam txhab kev cog lus rau kev ua tau zoo yog txhawb nqa los ntawm pab pawg kws tshaj lij: tawm ntawm 228 tus neeg ua haujlwm, 78 yog cov kws tshaj lij, suav nrog 28 tus kws tshaj lij tshwj xeeb. Qhov sib piv siab ntawm engineering txuj ci ua kom ntseeg tau tias txhua chav tsev, los ntawm cov khoom siv hluav taws xob ua kom sov rau cov hluav taws xob muaj hluav taws xob siab, tau ua kom zoo rau kev siv hluav taws xob thiab kev sib txuas seamless.
Xingfu cov khoom tau tsim los siv cov hlau tsis zoo stainless hlau thiab ua raws li cov qauv thoob ntiaj teb nruj, tuav ISO 9001 thiab CE daim ntawv pov thawj. Lawv daim ntawv tso cai Class B boiler manufacturing thiab Class 1/2 thawv ntawv tso cai ntxiv validate lawv lub peev xwm los tsim kom muaj kev nyab xeeb, ua raws li cov hlab ntsha. Los ntawm kev xaiv cov chaw tsim khoom xws li Xingfu, cov neeg yuav khoom tau txais kev nkag mus tsis yog rau cov khoom siv xwb, tab sis mus rau cov qauv kev pab cuam lub neej ua tiav - los ntawm kev tsim-theem kev sab laj thiab xaiv cov khoom siv rau kev pab cuam installation thiab kev txhawb nqa mus ntev. Qhov kev koom tes ncaj qha no tshem tawm qhov tsis paub tseeb ntawm cov khoom thib peb, kom ntseeg tau tias qhov zoo ntawm "lub Hoobkas ncaj qha" txhais tau tias muaj kev ntseeg siab thiab ua tau zoo.
Pricing rau ib hluav taws xob chav generator industrial chav tsev sib txawv raws li qhov muaj peev xwm, nta, thiab kev hloov kho. Xyoo 2026, kev yuav lub Hoobkas ncaj qha muaj kev txuag nyiaj ntau piv rau kev yuav khoom los ntawm cov neeg xa khoom lossis cov neeg muag khoom thib peb. Factory-direct pricing tshem tawm cov neeg nruab nrab margins, feem ntau txo cov nqi los ntawm 15-30%.
Nco tseg: Cov no yog qhov qhia txog ntau yam rau kev yuav khoom ncaj qha rau lub Hoobkas. Kev cai configurations yuav txawv.
| Peev xwm (kW) | Chav tso zis (kg / h) | Tus nqi ntau (USD) | Zoo tshaj rau |
|---|---|---|---|
| 50-100 kW | 70-140 kg / h | $3,500 - $6,500 | Kev cob qhia me me, labs, pilot nroj tsuag |
| 150-250 kW | 210-350 kg / h | $7,000 - $12,000 | Kev ua zaub mov nruab nrab, ntxhua khaub ncaws |
| 300-500 kW | 420-700 kg / h | $13,000 - $22,000 | Kev tsim khoom loj, cov nroj tsuag tshuaj |
| 500+ kW (Kev cai) | 700+ kg/h | $25,000+ | Kev lag luam hnyav, hauv cheeb tsam cua sov |
Thaum thov cov lus tsocai, xyuas kom koj qhia koj qhov kev xav tau ntawm qhov hluav taws xob (piv txwv li, 380V, 480V, 600V) thiab theem (3-theem yog tus qauv rau chav tsev). Cov nqi ntxiv yuav suav nrog kev xa khoom, kev xa khoom xa tuaj, thiab cov kev pabcuam hauv zos. Lub Hoobkas ncaj qha cov neeg muag khoom feem ntau muab cov ncauj lus kom ntxaws CAD kos duab thiab cov ntawv qhia kev teeb tsa los pab txhawb cov neeg ua haujlwm hauv zos.
Xaiv qhov raug hluav taws xob chav generator industrial tus qauv xav tau kev ntsuam xyuas meej ntawm koj cov kev xav tau tshwj xeeb. Ib chav tsev undersized yuav tawm tsam kom tau raws li qhov xav tau, ua rau kev tsim khoom qeeb, thaum lub tsev loj loj yuav mus ncig ntau zaus, txo kev ua haujlwm thiab kev tiv thaiv lub neej.
Txiav txim siab koj qhov siab tshaj plaws thiab nruab nrab chav noj hauv kg / h lossis lbs / h. Xav txog qhov siab tshaj plaws thaum lub sijhawm pib lossis lub sijhawm tsim khoom siab. Nws raug nquahu kom ntxiv 10-20% kev nyab xeeb rau koj qhov kev xav tau los ua kom haum rau yav tom ntej nthuav dav lossis npaj txhij txog spikes.
Txheeb xyuas lub siab xav tau ntawm qhov chaw siv. Nco ntsoov tias kev poob siab tshwm sim hauv cov kav dej thiab fittings. Xaiv lub tshuab hluav taws xob uas tuaj yeem xa cov chav ntawm qhov siab me ntsis dua li qhov xav tau los them rau cov kev poob no. Cov ntawv thov kev lag luam feem ntau xav tau ntawm 7 bar thiab 10 bar (100-150 psi).
Cov dej tsis zoo cuam tshuam rau kev ua haujlwm thiab kev ua haujlwm ntev ntawm cov tshuab hluav taws xob hluav taws xob. Cov dej tawv ua rau cov nplai tsim ntawm cov cua sov, txo kev ua haujlwm thiab ua rau tsis ua haujlwm ntxov. Ua ib qho kev ntsuam xyuas dej los txiav txim siab hardness, TDS (Tag nrho Dissolved Solids), thiab qib pH. Raws li qhov tshwm sim, xaiv ib chav tsev uas muaj peev xwm tsim nyog thiab nqis peev rau hauv kev kho dej (softener lossis RO unit).
Xyuas kom koj lub chaw muaj hluav taws xob txaus los txhawb lub tshuab hluav taws xob. Xyuas qhov muaj voltage thiab amperage. Cov chav loj loj yuav xav tau kev hloov pauv tshwj xeeb lossis hloov kho rau lub vaj huam sib luag tseem ceeb. Tham nrog tus kws tshaj lij hluav taws xob tsim nyog los ntsuas qhov ua tau thiab tus nqi ntawm kev hloov kho hluav taws xob.
Rau cov chaw tsim khoom niaj hnub no, kev koom ua ke nrog SCADA lossis BMS systems uas twb muaj lawm yog qhov tseem ceeb. Nrhiav cov tshuab hluav taws xob nrog kev sib txuas lus xws li Modbus, Profibus, lossis Ethernet / IP. Kev saib xyuas thaj chaw muaj peev xwm tso cai rau kev saib xyuas kev kwv yees thiab kev ua haujlwm ntawm lub sijhawm taug qab, txo qis sijhawm.
Kev txhim kho kom zoo thiab kev saib xyuas tsis tu ncua yog qhov tseem ceeb rau kev ua kom lub neej ntev thiab ua haujlwm tau zoo ntawm koj hluav taws xob chav generator industrial qhov system. Kev tsis saib xyuas cov yam no tuaj yeem ua rau muaj kev kho mob kim heev thiab kev ua haujlwm tsis zoo.
Kev Tshawb Fawb Txhua Hnub:
Kev Tshawb Fawb Txhua Lub Limtiam:
Kev Tshawb Fawb Lub Hlis:
Kev tu txhua xyoo:
Txawm hais tias nrog cov thev naus laus zis siab, cov neeg siv yuam kev tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm ib qho hluav taws xob chav generator industrial chav tsev. Zam tsis txhob muaj cov pitfalls no:
Cov nqi khiav lag luam nyob ntawm tus nqi hluav taws xob hauv zos thiab cov qauv siv. Feem ntau, cov tshuab hluav taws xob hluav taws xob yog kim dua los khiav ib chav tsev ntawm lub zog piv rau cov pa roj hauv cov cheeb tsam uas pheej yig roj. Txawm li cas los xij, thaum muab kev saib xyuas, kev tuav pov hwm, thiab tsis muaj kev ua raws cai, tag nrho cov nqi ntawm cov tswv cuab tuaj yeem sib tw. Siv tus qauv: Tus nqi = Fais fab (kW) × Teev ua haujlwm × Tus nqi hluav taws xob ($ / kWh).
Nws tsis pom zoo. Cov dej kais dej feem ntau muaj cov zaub mov uas ua rau scaling thiab corrosion. Kev siv cov kais dej tsis kho yuav ua rau tsis muaj kev lav phib xaub thiab ua rau lub neej luv ntawm cov cua sov. Ib txwm siv cov dej softened lossis demineralized nrog TDS qib qis dua 50 ppm.
Nrog kev saib xyuas kom zoo thiab kev kho dej, lub tshuab hluav taws xob muaj hluav taws xob tuaj yeem kav ntev li 15-20 xyoo. Cov khoom cua sov yuav xav tau hloov txhua 3-5 xyoos nyob ntawm qhov dej zoo thiab kev siv zog.
Yog lawm, lawv raug suav hais tias muaj kev nyab xeeb dua li cov pob txha roj boilers vim tias tsis muaj kev sib txuas, tsis muaj roj cia, thiab tsis muaj pa roj. Txawm li cas los xij, lawv ua haujlwm nyob rau hauv kev kub siab thiab kub, yog li cov txheej txheem siab ceev ceev ceev yuav tsum tau ua raws. Kev tshuaj xyuas tsis tu ncua ntawm kev nyab xeeb li qub thiab kev tswj hwm yog qhov tseem ceeb.
Cov tshuab hluav taws xob niaj hnub no feem ntau tuaj nrog cov chaw sib txuas lus (Modbus RTU / TCP, Profibus, thiab lwm yam) uas tso cai rau kev sib koom ua ke nrog PLC lossis SCADA uas twb muaj lawm. Qhov no enables centralized saib xyuas thiab tswj.
Tag nrho cov reputable electric steam generators yog nruab nrog tsawg-dej cutoff pab kiag li lawm. Yog tias cov dej qis qis qis dua qhov chaw nyab xeeb, lub kaw lus cia li kaw lub hwj chim rau cov cua sov kom tsis txhob qhuav qhuav thiab puas. Lub tswb feem ntau yog ua rau ceeb toom tus neeg teb xov tooj.
Raws li peb txav mus ntxiv rau xyoo 2026 thiab dhau mus, ntau qhov kev hloov pauv tau tsim lub neej yav tom ntej ntawm hluav taws xob chav generator industrial technology:
Kev nqis peev hauv ib industrial electric steam generator yog qhov kev txiav txim siab zoo uas muab cov txiaj ntsig mus ntev hauv kev ua tau zoo, kev nyab xeeb, thiab kev ruaj khov. Rau xyoo 2026, kev ua lag luam nyiam lub Hoobkas ncaj qha kev yuav khoom kom ua kom muaj nuj nqis thiab ua kom muaj kev txhawb nqa. Los ntawm kev nkag siab txog koj cov kev xav tau tshwj xeeb ntawm chav dej, ua kom pom tseeb ntawm cov dej zoo, thiab ua raws li kev saib xyuas cov kev coj ua zoo tshaj plaws, koj tuaj yeem ua kom ntseeg tau thiab muaj txiaj ntsig zoo rau koj cov txheej txheem kev lag luam.
Txawm hais tias koj nyob hauv kev ua zaub mov, tshuaj, textiles, lossis kev tsim tshuaj lom neeg, hluav taws xob tshuab hluav taws xob muab qhov tseeb thiab kev huv huv uas yuav tsum tau ua rau cov khoom siv niaj hnub zoo. Kev tshem tawm ntawm qhov chaw emissions tsis yog tsuas yog pab tau raws li kev tswj hwm tab sis kuj tseem txhim kho koj lub hom phiaj kev cog lus rau ib puag ncig lub luag haujlwm.
Txhawm rau nrhiav kev daws teeb meem rau koj qhov chaw, xav txog koj qhov kev xav tau siab tshaj plaws, muaj hluav taws xob tsim hluav taws xob, thiab dej zoo. Kev koom tes nrog cov chaw tsim khoom muaj npe nrov uas muab lub Hoobkas ncaj qha tus nqi thiab kev txhawb nqa tom qab muag yog qhov tseem ceeb rau kev ua tiav.
Npaj los optimize koj chav dej? Ntsuam xyuas koj qhov kev siv hluav taws xob tam sim no thiab tshawb xyuas seb lub tshuab hluav taws xob hluav taws xob tuaj yeem txo koj qhov kev ua haujlwm nyuaj. Rau cov ncauj lus kom ntxaws specifications, kev cai quotes, thiab kev sab laj, hu rau peb pab neeg engineering hnub no.