Qhov zoo tshaj plaws PTFE Tube Chaw tsim tshuaj paus, Hoobkas, tus neeg muag khoom hauv Suav teb
Besteflon Industrial Co., Ltd tau tsim muaj nyob rau hauv 2005, yog ib qho ntawm cov ua PTFE Tube manufacturers, factories & lwm tus neeg nyob hauv Suav teb, txais OEM, ODM, SKD xaj.Peb muaj cov kev paub dhau los hauv kev tsim khoom & kev tshawb fawb kev loj hlob rau ntau hom PTFE raj hom.Peb tsom mus rau cov thev naus laus zis siab, kev tsim khoom nruj, thiab QC system zoo meej.
Cov ntawv pov thawj: ISO9001: 2015 │ RoHS Cov Lus Qhia (EU) 2015/863 │ US FDA 21 CFR 177.1550 │ EU GHS SDS
PTFE Tube
Polytetrafluoroethylene, abbreviated liPTFE, feem ntau hu ua "Huab tais yas", yog lub siab molecular polymer npaj los ntawm polymerizing tetrafluoroethylene li monomer. Dawb waxy, translucent, zoo heev kub thiab txias tsis kam, yuav siv tau ntev ntawm -65ºC ~ 260ºC.
PTFE tubesyog ua los ntawm 100% nkauj xwb PTFE resin yam tsis muaj xim los yog additives, muaj cov yam ntxwv ntawm kuj acid, alkali, thiab ntau yam organic solvents, thiab yuav luag insoluble nyob rau hauv tag nrho cov kuab tshuaj.Lub raj tshuaj tiv thaiv corrosion-resistant no yog tsim rau kev lag luam, tshuaj ua haujlwm, kev sim dav dav, tsheb, aerospace, kev pabcuam zaub mov, thiab lwm yam dej siv.
Koj tus PTFE Tube Supplier
Zoo li PTFE Tubes
Raws li kev siv sib txawv, peb muaj ntau qhov sib txawv ntawm PTFE raj:
Smooth Bore PTFE Tube
PTFE du tubingyog ib tug du bore puab raj extruded los ntawm kub sintering.Nws yog qhov tsim nyog rau cov ntawv thov uas yuav tsum tau khoov lub vojvoog tsis tseem ceeb.
Lub raj ncaj nraim no yog qhov tsim qauv yooj yim tshaj plaws, thiab nws qhov chaw du muaj qhov sib txhuam qis heev, muab cov dej ntws ntau dua thiab ntws tawm, yog li txo cov txheej txheem sib kis.PTFE raj yog kub resistant thiab kub siab, muaj peev xwm ua hauj lwm nyob rau hauv kub kub ib puag ncig.Tsis tas li ntawd, cov khoom siv tau yooj yim, tshuaj lom neeg ua haujlwm, tsis muaj nplaim taws thiab kub ua haujlwm.Nws kuj muaj lub zog dielectric siab thiab yog inert rau feem ntau cov tshuaj thiab cov kuab tshuaj.
PTFE Corrugated Tube
PTFE corrugated rajNws muaj qhov yooj yooj yim thiab kink tsis kam rau cov ntawv thov uas xav tau lub vojvoog khoov nruj dua, nce siab tuav lossis muaj peev xwm tiv thaiv extrusion.Convoluted tubing tuaj yeem tau txais los ntawm flares, flanges, cuffs, los yog kev sib xyaw ua ke ntawm ntau lub raj zoo.Tag nrho cov raj muaj nyob rau hauv anti-static (carbon) version.
PTFE Convoluted Smooth Bore Hose
PTFE convoluted du bore hoseyog txawv los ntawm lwm yam PTFE hose khoom tam sim no muaj, Nws lined raj sab hauv yog du, tab sis yog corrugated rau sab nraud.Yog li ntawd, nws tuaj yeem ua tau raws li qhov teeb meem ntawm kev txav siab tab sis tsis muaj kev cuam tshuam, thiab tuaj yeem daws qhov kev xav tau nruj ntawm kev khoov lub vojvoog.Nws yog tsim los muab cov neeg siv khoom xaiv zoo tshaj plaws rau ob qho tib si.
PTFE Capillary Tube
PTFE AWG (American gauge) hlab muab cov kev pabcuam zoo tshaj plaws rau lubrication, kub-kub tsis kam (welding resistance), chemical resistance, biocompatibility, hnav tsis kam, thiab precision extrusion tolerances.Nws yog ib qho yooj yim thiab translucent, me me-loj PTFE raj, Cov me me hloov pauv PTFE capillaries feem ntau yog muag ntawm 100 m, 153m, 250m, thiab 305m ib yob.Phab ntsa tuab yog tsawg dua 0.5 hli, thiab sab nraud yog tsawg dua 10 hli, uas yog siv dav hauv kev kho mob, hluav taws xob rwb thaiv tsev, thiab lwm yam kev siv.
Cov khoom muaj feem xyuam
FEP Tube
FEP cev (vinyl fluoride) yog ib qho tsis tshua muaj fluoride yas raj uas muaj pob tshab ntau dua li PTFE, ua rau nws zoo tagnrho rau kev pom lub ntsej muag / kev saib xyuas cov ntawv thov.Nws yog ib qho kev xaiv kev lag luam rau cov ntawv thov uas xav tau tshuaj tiv thaiv thiab kev sib cuag kub.
FEP raj muaj ib tug me ntsis siab coefficient ntawm kev sib txhuam, tsis tshua muaj kub rau kev siv tas li thiab, txawm hais tias mus txog 200 degrees, muaj tshuaj thiab dielectric zog zoo ib yam li cov FEP.Tsis tas li ntawd, FEP roj raj kuj muaj cov pa roj thiab vapor nkag tau zoo dua thiab zoo heev UV kis tau tus mob.
PFA Tubing
PFA (perfluoroalkoxy) rajyog lub raj fluoropolymer, thiab nws qhov kev tshawb pom tau muab qhov zoo ntawm PTFE thiab FEP.Cov kev hloov kho siv hauv PFA resin muaj qhov siab tshaj plaws siv kub thiab tshuaj lom neeg tsis zoo li PTF, yog li nws qhov kev ua tau zoo thiab siv kub thiab PTFE cov khoom yog tib yam.
Tsis tas li ntawd, PFA muaj kev ua haujlwm siab dua.Tab sis tsis zoo li FEP, chemistry ntawm PFA ua rau nws tsis tshua muaj volatile, yog li nyob rau hauv dav thiab muaj ntau yam kev siv nyob rau hauv ntau industries xws li tshuaj, kuaj sampling thiab semiconductors.
Koj tsis pom qhov koj tab tom nrhiav?
Tsuas yog qhia peb koj cov lus qhia ntxaws.Qhov kev pom zoo tshaj plaws yuav muab.
Smooth Bore Tubing Metric Sizes
| Tsis muaj. | Specification | Sab nraud txoj kab uas hla | Sab hauv txoj kab uas hla | Tube phab ntsa Thickness | Ua hauj lwm siab | Nruam siab | |||||
| mm | (inch) | mm | (inch) | mm | (inch) | (psi) | (bar) | (psi) | (bar) | ||
| 1 | 1/8 "* 1/16" | 3.17 | 0.125 Nws | 1.58 ib | 0.062 ib | 0.8 ua | 0.031 ib | 218 | 15.0 Nws | 725 ib | 50 |
| 2 | 3/16 "* 1/8" | 4.76 ib | 0.187 ib | 3.17 | 0.125 Nws | 0.8 ua | 0.031 ib | 174 | 12.0 Nws | 638 ib | 40 |
| 3 | 1/4 "* 3/16" | 6.35 Nws | 0.250 Nws | 4.76 ib | 0.187 ib | 0.8 ua | 0.031 ib | 131 | 9.0 ib | 464 ib | 32 |
| 4 | 5/16 "* 1/4" | 7.93 ib | 0.312 ib | 6.35 Nws | 0.250 Nws | 0.8 ua | 0.031 ib | 102 | 7.0 ib | 363 | 25 |
| 5 | 3/8 "* 1/4" | 9.52 ib | 0.357 ib | 6.35 Nws | 0.250 Nws | 1.5 | 0.059 ib | 174 | 12.0 Nws | 638 ib | 44 |
| 6 | 3/8 "* 5/16" | 9.52 ib | 0.357 ib | 7.93 ib | 0.312 ib | 0.8 ua | 0.031 ib | 87 | 6.0 | 319 | 22 |
| 7 | 1/2" * 3/8" | 12.7 ib | 0.500 Nws | 9.6 ib | 0.378 ib | 1.5 | 0.059 ib | 131 | 9.0 ib | 464 ib | 32 |
| 8 | 5/8 "* 1/2" | 15.87 Nws | 0.625 ib | 12.7 ib | 0.500 Nws | 1.5 | 0.059 ib | 102 | 7.0 ib | 363 | 25 |
| 9 | 3/4 "* 5/8" | 19.05 Nws | 0.750 ib | 15.87 Nws | 0.625 ib | 1.5 | 0.059 ib | 87 | 6.0 | 319 | 22 |
* Ua raws li SAE 100R14 tus qauv.
* Cov neeg siv khoom tshwj xeeb cov khoom tuaj yeem tham nrog peb kom ntxaws.
Smooth Bore Tubing Imperial Sizes
| Tsis muaj. | Specification | Sab nraud txoj kab uas hla | Sab hauv txoj kab uas hla | Tube phab ntsa Thickness | Ua hauj lwm siab | Nruam siab | |||||
| mm | (inch) | mm | (inch) | mm | (inch) | (psi) | (bar) | (psi) | (bar) | ||
| 1 | 2 * 4 | 4 | 0157 ua | 2 | 0.079 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 2 | 3 * 5 | 5 | 0.197 ib | 3 | 0.118 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 3 | 4 * 6 | 6 | 0.236 ib | 4 | 0.157 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 4 | 5 * 7 | 7 | 0.276 ib | 5 | 0.197 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 5 | 6 * 8 | 8 | 0.315 ib | 6 | 0.236 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 6 | 8 * 10 | 10 | 0.394 ib | 8 | 0.315 ib | 1 | 0.039 ib | 148 | 10.2 | 444 ib | 30.6 ib |
| 7 | 10 * 12 | 12 | 0.472 ib | 10 | 0.394 ib | 1 | 0.039 ib | 118 | 8.16 | 370 | 25.5 ib |
| 8 | 12 * 14 | 14 | 0.551 ib | 12 | 0.472 ib | 1 | 0.039 ib | 118 | 8.16 | 370 | 25.5 ib |
| 9 | 14 * 16 | 16 | 0.630 ib | 14 | 0.551 ib | 1 | 0.039 ib | 118 | 8.16 | 370 | 25.5 ib |
| 10 | 16 * 18 | 18 | 0.709 ib | 16 | 0.630 ib | 1 | 0.039 ib | 118 | 8.16 | 370 | 25.5 ib |
| 11 | 20 * 24 | 24 | 0.945 ib | 20 | 0.787 ib | 2 | 0.079 ib | 74 | 5.1 | 296 ib | 20.4 ib |
| 12 | 50 * 54 | 54 | 2.126 ib | 50 | 1.969 ib | 2 | 0.079 ib | 74 | 5.1 | 296 ib | 20.4 ib |
Convoluted PTFE Tube Qhov ntau thiab tsawg
| Tsis muaj. | Specification | Sab nraud txoj kab uas hla | Sab hauv txoj kab uas hla | Ua hauj lwm siab | Nruam siab | Yam tsawg kawg bending radius | |||||
| (inch) | (mm ±0.2) | (inch) | (mm ±0.1) | (psi) | (bar) | (psi) | (bar) | (inch) | (mm) | ||
| 1 | 1/4 " | 0.415 ib | 9.5 ib | 0.256 ib | 6.5 | 60 | 4 | 210 | 14.0 Nws | 0.787 ib | 20 |
| 2 | 5/16 " | 0.484 ib | 12.3 | 0.315 ib | 8.0 ib | 60 | 4 | 210 | 14.0 Nws | 0.866 ib | 22 |
| 3 | 3/8 " | 0.589 ib | 14.2 | 0.394 ib | 10.0 | 60 | 4 | 210 | 14.0 Nws | 1.024 ib | 26 |
| 4 | 1/2 " | 0.705 ib | 17.2 ib | 0.512 ib | 13.0 Nws | 60 | 4 | 210 | 14.0 Nws | 1.024 ib | 26 |
| 5 | 5/8 " | 0.860 ua | 21.9 ib | 0.630 ib | 16.0 Nws | 45 | 3 | 180 | 12.0 Nws | 1.260 Nws | 32 |
| 6 | 3/4 " | 1.039 ib | 25.3 | 0.748 ib | 19.0 Nws | 45 | 3 | 180 | 12.0 Nws | 2.165 ib | 55 |
| 7 | 1 | 1.378 ib | 31.0 Nws | 0.984 ib | 25.0 Nws | 45 | 3 | 150 | 10.0 | 3.150 Nws | 80 |
| 8 | 1-1/2 " | 1.772 ib | 45.0 Nws | 1.496 ib | 38.0 Nws | 38 | 3 | 135 | 9.0 ib | 3.937 ib | 100 |
| 9 | 2" | 2.343 ib | 59.5 ib | 1.969 ib | 50.0 ua | 30 | 2 | 120 | 8.0 ib | 4.921 ib | 125 |
* Ua raws li SAE 100R14 tus qauv.
* Cov neeg siv khoom tshwj xeeb cov khoom tuaj yeem tham nrog peb kom ntxaws.
Puas Muaj Kev Xav Tau Tshwj Xeeb?
Feem ntau, peb muaj cov khoom siv PTFE TUBE thiab cov khoom siv raw hauv Tshuag.Rau koj qhov kev thov tshwj xeeb, peb muab koj cov kev pabcuam customized.Peb txais OEM / ODM.Peb tuaj yeem luam koj lub logo lossis hom npe ntawm lub cev hose.Rau qhov hais kom raug, koj yuav tsum qhia peb cov ntaub ntawv hauv qab no:
Txheej txheem ntau lawm
Raw Khoom
Pwm Base
Extrusion
Ntim
PTFE Tube
Ptfe Flexible Corrugated Tubing
Daim ntawv thov rau PTFE Tube
PTFE raj yog ib qho tseem ceeb ntawm txhua lub tshuab luam ntawv 3D, xws li cov hlua khi ntawm lub tshuab tsav ncaj qha lossis raws li Bowden teeb rau txoj kev filament nws tus kheej.Qhov kev sib txhuam tsawg thiab nruj heev yog qhov tseem ceeb heev rau kev ua tau zoo ib yam thiab txhim khu kev qha ntawv, muab cov tshuab luam ntawv zoo thiab yooj yim.Peb muaj PTFE tubing ua rau qhov ntawd.
Qhov ntau thiab tsawg rau 3D tshuab luam ntawv: 2x4mm, 4x6mm
Muaj xim: dawb, xiav, liab, ntsuab, dub, thiab lwm yam.
PTFE raj kuj feem ntau pom nyob rau hauv lub tshuab kas fes, nws yuav nquag siv los nqa dej hauv siab thiab yuav siv cov khoom sib txuas tsim nyog ntawm txhua qhov kawg, xws li tooj dag bushing.Ntev yog qhov tseem ceeb heev thaum siv hauv tshuab kas fes.Yog tias nws luv dua lossis ntev dua, nws yuav cuam tshuam nrog HX intermix thiab hloov pauv tus nqi rov qab thiab kev ruaj ntseg ntawm kev sib pauv cua sov.
Qhov ntau thiab tsawg rau kas fes tshuab: 1/8 '' x 1 / 4 '', 2.5x4mm, 3x5mm, 4x6mm, 6x8mm thiab lwm yam.
PTFE corrugated tube muaj qhov kub thiab txias tsis kam, tiv thaiv corrosion, kev laus ua haujlwm, thiab kev ua haujlwm zoo, uas ua rau nws xaiv zoo raws li cov kua cua txias rau ntau yam khoom siv hluav taws xob, feem ntau pom hauv cov ntaub ntawv chaw, cov khoos phis tawj.
FEP tuav nws lub zog thiab cov txiaj ntsig hauv ntau qhov kub thiab txias.FEP tubing yog tsim los nrog kev txhim kho tshuaj tiv thaiv nrog cov pa roj thiab vapor permeability thiab zoo heev UV kis tau tus nqi.FEP tubing tseem muab qhov pom tseeb ntxiv ntawm PTFE nrog ntau dua coefficient ntawm kev sib txhuam, crystallinity, pob tshab thiab tsis muaj microporosity, uas ua rau nws zoo tagnrho rau kev lag luam pneumatic hloov cov pa roj carbon dioxide.
Hauv kev lag luam kws tshuaj, tuam txhab lag luam yuav tsum tso siab rau cov kav dej kom tswj tau qhov purity ntawm cov khoom.Piv txwv li, cov dej ntshiab huv uas thauj los ntawm cov raj xa dej yuav tsum muaj peev xwm tswj tau cov tshuaj purity thoob plaws hauv cov txheej txheem;PFA qhov tsis muaj zog rau cov tshuaj, suav nrog lwm cov tshuaj lom neeg muaj kev phom sij uas tuaj yeem pom hauv chav kuaj, xws li sulfuric acid, ua rau nws muaj kev xaiv zoo tshaj plaws uas tsis muaj qhov sib piv.Rau cov tuam txhab tshuaj uas yuav tsum tau siv cov khoom siv corrosive heev xws li nitric lossis phosphoric acid, PFA tubing yuav yooj yim tiv thaiv nws cov khoom puas tsuaj.
Fittings Rau PTFE Tube
Qhov zoo: Kev ceev ceev ceev kev sib txuas thiab kev sib txuas, tsis muaj cov cuab yeej xav tau, tsis muaj qhov tsis txaus, ntws nyob ntawm txoj kab uas hla ntawm lub raj.
Qhov tsis zoo: tsis tshua muaj siab, ua haujlwm siab 0-10 bar.
Qhov zoo: Kev sib txuas ceev thiab txiav tawm, yuav tsum tau hloov cuab yeej.Cov qauv yooj yim, tsis muaj foob, kev sib txuas yooj yim.Lub siab thiab kub nyob ntawm seb cov khoom ntawm lub raj.
Disadvantage: Tsuas yog haum rau cov leeg mos xws li Nylon, PU lossis PTFE.
Lub compression haum yog tsim los ntawm lub cev valve, txiv ntseej, pem hauv ntej ferrule thiab rear ferrule.
Qhov zoo: Kev kub siab, tsis muaj foob.
Qhov tsis zoo: Tsuas yog tsim nyog rau cov kav dej tsis zoo, xws li cov kav dej tooj liab, cov kav hlau tsis muaj steel, cov kav dej txhuas, thiab lwm yam. Thaum siv PTFE tubing lossis nylon tubing, yuav tsum tau siv cov tubing tooj liab sab hauv.
PTFE Tube: Phau Ntawv Qhia Qhov Kawg
PTFE tubingyog ib tug corrosion-resistant raj uas yog siv nyob rau hauv ntau yam kev siv.PTFE tubing yog ib qho ntawm cov khoom siv nkaus xwb uas yuav tiv taus qee hom kua qaub.Cov tubing tuaj yeem hloov kho mus ua haujlwm hauv ntau lub sijhawm.PTFE tubing muaj kev sib txhuam tsawg heev thiab tuaj yeem pab txhim kho kev ntws.Qee zaum PTFE tubing yog siv rau hauv daim ntawv thov kev pabcuam zaub mov thiab.
PTFE yog dab tsi?
PTFE yog cov ntawv luv rau polytetrafluoroethylene, cov khoom siv hluavtaws uas muaj 2 cov ntsiab lus tseem ceeb xws li carbon thiab fluorine.
Cov khoom ntawm PTFE Tube
Cov tshuaj tiv thaiv siab
Distinctly inert
Withstands kub txog li 240 ° C
Superior dielectric zog
Cov txiaj ntsig ntawm PTFE Tube
Haum rau nqa cov kua dej ntau corrosive / reactive
Muaj txiaj ntsig zoo hauv kev siv tshuaj kho mob
Siv tau rau hauv cov ntawv siv cua sov
Insulating nruab nrab hauv cables thiab hnyav hluav taws xob
Ptfe Bowden Tube Max Temp
Peb Teflon connector tubing tuaj yeem tiv taus qhov kub ntawm qis li -180C rausiab li 260C, ua nws zoo tagnrho li spare qhov chaw rau 3D tshuab luam ntawv.
Ptfe Tube Max Temp
PTFE tubing yog chemically resistant, muaj ib tug tsawg coefficient ntawm kev sib txhuam, thiab dav kub ntawm 500 ° F (260 ° C) mus rau-454 ° F (-270 ° C).
Ptfe Tube Melting Temp
Vim nws qhov kev hloov pauv siab, PTFE feem ntau yog siv nrog microfluidic fittings hauv cov ntawv siv qis.Nws lub melting point yog mus txogntawm 327 ° C, ua rau nws yog ib yam khoom ntawm kev xaiv nyob rau hauv high kub daim ntaub ntawv.
Ptfe / fep Tube Shrink Kub
txog 330 ° C
Thaum lub sij hawm shrinking txheej txheem, txheej txheej PTFE shrinks ntawm qhov kub ntawm txog 330 ° C.
Yuav Ua Li Cas Tshem Ptfe Tube Los Ntawm Extruder
Txhawm rau tshem tawm PTFE raj ntawm koj lub extruder, koj yuav tsumdepress lub voj voog yas coupler kom tso cov hniav uas tuav lub raj nyob rau hauv qhov chaw, ces rub tawm lub PTFE raj.Yog tias koj tsis tuaj yeem rub nws tawm, tshem tawm tag nrho cov khoom siv los ntawm extruder, tom qab ntawd siv lub zog ntau dua rau lub coupler siv cov cuab yeej thiab tshem tawm lub raj.
Ntev npaum li cas Ptfe Tube caj pas
5mm los ntawm qhov kawg.qhov no yuav kaw koj qhov kev sib txuas ntawm koj lub nozzle thiab caj pas.
Ptfe Tube Rau 3d tshuab luam ntawv yog dab tsi?
PTFE yog ib feem ntau siv nyob rau hauv filament-raws li 3D tshuab luam ntawv.Nws yogcov khoom siv dawb siv rau hauv cov raj coj filament ntawm extruder thiab kub kawg.Bowden-style 3D tshuab luam ntawv yuav tsum tau siv cov PTFE raj los xyuas kom meej lub extruder tuaj yeem thawb lub filament kom zoo, tab sis ncaj qha extruders tsis xav tau cov raj no.
Yuav ua li cas ntxuav tawm ib tug clogged Ptfe Tube rau 3d tshuab luam ntawv?
Qee zaum, cov filament tuaj yeem daig hauv PTFE raj thiab tsis tuaj yeem tshem tawm ntawm tes.Yog li ntawd,boiling lub raj hauv dej tuaj yeem pab tau.Qhov no softens lub filament sab hauv thiab tom qab ntawd koj tuaj yeem thawb nws tawm.PTFE tsis raug mob los ntawm cov dej kub npau npau, vim nws tiv taus kub ntau dua.
Thaum Yuav Hloov Ptfe Tube?
Kuv ntseeg tias lub sijhawm pom zoo rau kev hloov nozzle yogtxog ib nrab xyoo.Tab sis nyob ntawm seb filament dab tsi thiab ntau npaum li cas koj luam tawm.
Kev sib piv ntawm PTFE Tubes Nrog FEP Thiab PFA Tubes
Zoo sib xws:
Kev ua haujlwm zoo ib yam, huab cua zoo heev, tiv thaiv corrosion, siab thiab kub tsis kam.
Qhov txawv:
FEP & PFA
Tus nqi kim
Cov txheej txheem ntau lawm
Ntuj xim yog pob tshab
Yuav yaj welded, Unlimited raj ntev
PTFE
Tus nqi qis dua, cov xim ntuj xim mis dawb los yog translucent.
Yooj yim rau weld, Tube ntev yog txwv
Daim ntawv thov teb yog dav dua.
PTFE Corrugated Tube VS Roj Hmab Tube
Piv nrog rau cov raj roj hmab siv hauv tsev neeg cov khoos phis tawj tsis tu ncua, PTFE corrugated flexible raj yog qhov kev xaiv zoo tshaj plaws ntawm cov kua dej txias siv hauv cov khoos phis tawj lossis cov chaw khaws ntaub ntawv, vim PTFE muaj qhov kub zoo dua, tiv thaiv corrosion thiab tiv thaiv kev laus dua li roj hmab.