EN ISO 20471 thiab ANSI / ISEA 107 ua ib yam haujlwm ntawm qib siab: lawv txhais cov kev xav tau ntawm kev ua haujlwm siab - pom cov khaub ncaws siv los txhim kho cov neeg hnav kom pom tseeb hauv nruab hnub thiab hauv qab lub teeb hauv qab tsheb hauv qis - teeb pom kev zoo. Cov kev faib tawm yog qhov no: EN ISO 20471 faib cov khaub ncaws feem ntau los ntawm qhov tsawg kawg nkaus pom cov khoom siv thiab tso chaw, thaum ANSI / ISEA 107-2020 faib cov khaub ncaws los ntawmHomthiabChav Kawm Ua Haujlwm, txuas cov tsoos tsho ncaj qha mus rau kev tawm ntawm -txoj kev, txoj kev, lossis pej xeem- kev siv kev nyab xeeb.
Rau kev yuav khoom, qhov no tsis yog daim ntawv lo - hloov qhov teeb meem. Nws cuam tshuam rau cov qauv kev tsim vaj tsev, qhov nyiaj pub dawb rau lub logo, qhov tsawg tshaj plaws - ua raws li qhov loj me, cov ntaub ntawv pov thawj, cov lus sib tw, thiab lub Hoobkas QA tso tawm cov qauv. Tuam Tshoj cov chaw tsim khoom lossis cov chaw muag khoom pabcuam rau EU thiab Asmeskas cov nyiaj yuav tsum tsim cov pob khoom sib cais, cov ntawv lo, thiab cov chaw kuaj xyuas rau txhua lub khw muag khoom es tsis yog muag ib qho "hloov ntiaj teb hi-vis vest" spec. Qhov no yog ib qho kev tsim kho thiab kev ua raws cai raws li ob tus qauv 'cov qauv kev faib tawm sib txawv thiab cov ntsiab lus siv raws cai.
Cov txheej txheem tseem ceeb txhais thiab kho keeb kwm
TS EN ISO 20471: 2013 / EN ISO 20471: 2013+A1: 2016 - siab - cov ris tsho hnav ris tsho
ISO 20471: 2013 qhia meej txog cov kev xav tau rau siab - cov khaub ncaws pom kev pom zoo los muab kev pom zoo ntawm tus neeg hnav thaum nruab hnub thiab hauv qab teeb taws hauv qhov tsaus ntuj. ISO hais tias tus qauv suav nrog cov kev cai rau xim, rov qab ua dua, qhov tsawg kawg nkaus ntawm cov khoom siv, thiab kev tso cov khoom siv. Hauv Tebchaws Europe, kev ua lag luam siv feem ntau siv los ntawm PPE cov neeg yuav khoom thiab kuaj lub cev yogEN ISO 20471: 2013+A1: 2016, uas yog European kev siv ntawm ISO 20471: 2013 nrog Hloov Kho 1: 2016.
ANSI/ISEA 107-2020 - siab- pom kev nyab xeeb apparel rau kev siv US
ANSI/ISEA 107-2020 yog qhov thib tsib ntawm US siab- pom kev hnav khaub ncaws tus qauv. ANSI qhov kev saib ua ntej tau hais tias xyoo 2020 tsab tuav lub sijhawm ntevHom -Performance Classnpe, whereHomyog raws li qhov xav tau ntawm kev siv thiabChav Kawm Ua Haujlwmyog raws li pom cov khoom kom muaj nuj nqis thiab tsim cov yam ntxwv hauv cov tsoos tsho tiav. Cov ntaub ntawv qub qub tau hloov pauv suav nrog kev tshem tawm cov txheej txheem ntxiv, ntxiv cov txheej txheem rau ib zaug - siv cov ntaub ntawv pov tseg, thiab cov lus xaiv rau kev kuaj pom kev hmo ntuj nyob rau hauv ASTM E1501.
Qhov cuam tshuam ntawm kev yuav khoom: kev tswj hwm version yuav tsum qhia meej
Daim ntawv xaj uas tsuas yog hais tias "ANSI 107 ua raws" lossis "EN 20471 tau ntawv pov thawj" yog xoob dhau rau kev nrhiav PPE loj. Lub Hoobkas hais, tech pob, xeem cov ntaub ntawv, lub thawv cim, thiab sewn - hauv daim ntawv lo yuav tsum hais cov qauv siv raws nraim, xws li:
- EN ISO 20471: 2013+A1: 2016 Chav Kawm 2
- ANSI/ISEA 107-2020 Hom R Chav Kawm 3
Qhov no tiv thaiv kev pom zoo yuam kev thaum tus neeg yuav khoom tshawb xyuas ua ntej -cov qauv tsim tawm tawm tsam cov ntaub ntawv sib tw lossis cov haujlwm HSE cov cai.
Fluorescent keeb kwm yav dhau cov khoom sib piv: Chav Kawm 1/2/3
EN ISO 20471 Yam tsawg kawg nkaus pom cov khoom siv
ISO 20471 Table 1 teeb tsa qhov tsawg kawg nkaus uas yuav tsum tau pom thaj chaw ntsuas ntawmcov khaub ncaws me tshaj plaws muajnrog fasteners hloov mus rau qhov tsawg tshaj plaws configuration. Cov chav kawm yog txiav txim los ntawm tusthaj tsam qis tshaj ntawm cov khoom pom, thiab lub logo lossis cov ntawv lo yuav tsum tsis txhob txo qhov tsawg kawg nkaus pom qhov xav tau rau kev faib tawm.
| EN ISO 20471 Chav Kawm | Cov ntaub ntawv keeb kwm yav dhau | Retroreflective Khoom | Combined Performance Material |
|---|---|---|---|
| Chav Kawm 1 | 0.14 m² | 0.10 m² | n.a. |
| Chav kawm 2 | 0.50 m² | 0.13 m² | n.a. |
| Chav kawm 3 | 0.80 m² | 0.20 m² | 0.20 m² |
ANSI/ISEA 107-2020 yam tsawg kawg nkaus pom cov khoom siv
ANSI/ISEA 107-2020 sivHom O, Hom R, thiabHom Pnrog rau thaj tsam sib cais los ntawm chav kawm ua haujlwm. Cov ntsiab lus ntawm kev lag luam ua raws li 2020 tsab qhia txog qhov tsawg kawg nkaus hauv qab no:
| ANSI/ISEA 107-2020 Kev Tsim Kho | Cov ntaub ntawv keeb kwm yav dhau | Retroreflective Khoom |
|---|---|---|
| Hom O Chav Kawm 1 | 217 ib sq | 155 ib sq |
| Hom R Chav Kawm 2 | 775m4 wb | 201 ib sq |
| Hom R Chav Kawm 3 | 1240 ib m² | 310 ib sq |
| Hom P Chav Kawm 2 | 450 ib sq | 201 ib sq |
| Hom P Chav Kawm 3 | 775m4 wb | 310 ib sq |
| Chav Kawm E Cov Khoom Ntxiv | 4 65 kwg | 109 ib sq |
Rau qhov tsawg tshaj plaws uas tau muab, ANSI 107-2020 kuj tso cai rau txo qis hauv cheeb tsam rauHom R Chav Kawm 2thiabHom R Chav Kawm 3cov khaub ncaws kom haum rau cov neeg ua haujlwm me me:5 40 kwgrau qhov tsawg tshaj plaws hom R Class 2 loj thiab1000 ib sqrau qhov tsawg tshaj plaws Hom R Class 3 loj; qhov loj dua yuav tsum rov qab mus rau qhov pib tag nrho.
Kev sib piv ncaj qha
Ib qho yuam kev ntawm kev muab khoom yog khoEN ISO Class 2sib npaug rauANSI Chav Kawm 2. Qhov ntawd yog qhov tsis raug vim ANSI Chav Kawm 2 muaj nyob rau hauv Hom -raws li lub moj khaum, thaum EN ISO 20471 tsis siv O / R / P cais. Cov tsoos tsho tiav yuav xav tau cov vaj huam sib luag geometry sib txawv, kev kho lub tes tsho, lossis kev txwv lub logo txawm tias thaj chaw fluorescent ntaub zoo li zoo ib yam ntawm daim ntawv.
Txawv engineering cuam tshuam rau OEM kev txhim kho
Rau ib lub Hoobkas Tuam Tshoj tsim OEM siab - pom cov ris tsho, cov hauv qab no sib txawv ncaj qha cuam tshuam rau kev pom zoo hauv chav kawm zaum kawg:
- Birdseye polyester mesh qhib- thaj tsam pivntawm kev ruaj ntseg vests, vim mesh cutouts txo countable tom qab cheeb tsam.
- Lub hauv siab hnab tshos thiab xov tooj cua loop footprint, vim tias tsis yog -kev ua raws li kev txiav tawm cuam tshuam thaj chaw pom.
- Back print dav thiab npo -print qhov chaw, vim tias cov logos tsis tuaj yeem txo qhov suav qhov tsawg kawg nkaus raws li ISO 20471 Table 1.
- Cov khaub ncaws me tshaj plaws muaj, vim tias ob qho tib si ISO thiab ANSI khi qhov tsawg kawg nkaus pom cheeb tsam xam rau qhov me me tshaj plaws hauv qhov tsim ntau yam.
Thov Tus Nqi Loj rau ANSI Chav Kawm 2 / Chav Kawm 3 Kev Nyab Xeeb Vests
Yog tias koj cov ntaub ntawv sib tw qhia txog Hom R Chav Kawm 2 lossis EN ISO 20471 Chav Kawm 2, thov qhov loj me -los ntawm - qhov loj me pom thaj chaw tawg ua ntej kev pom zoo qauv. Rau cov khoom muaj feem xyuam, tshuaj xyuas Safety Vestrau kev tsim lub tsho khuam siv noog eye mesh, khoom polyester, thiab cov qauv plhaub tsis muaj dej.
Retroreflective cov ntaub ntawv layout thiab kev xeem yuav tsum tau sib txawv
EN ISO 20471 layout txoj cai yog geometry -tsav
ISO 20471 yuav tsum tsis yog tsuas yog thaj chaw tsawg kawg nkaus xwb tab sis kuj tseem muaj cov txheej txheem tshwj xeeb. Los ntawm cov ntawv nyeem:
- Cov ntaub ntawv keeb kwm yav dhau ntawm lub cev-tsuas yog tsoos tsho yuav tsum nyob puag ncig lub cev thiab tuav qhov dav yam tsawg kawg nkaus ntawm50 mm.
- Retroreflective bands yuav tsum yog tsawg kawg50 mmdav.
- Kab rov tav torso bands tuaj yeem muaj qhov siab tshaj plaws ntawm± 20 degreemus rau kab rov tav.
- Hauv qab ntawm lub cev qis tshaj plaws yuav tsum yog tsawg kawg50 mmsaum qab ntug.
- Qhov twg siv ntau tshaj ib kab kab rov tav, cov bands yuav tsum yog tsawg kawg50mm sib nrug.
- Qhov khoob hauv ib lub band tshwm sim los ntawm cov fasteners lossis seams yuav tsum tsis pub tshaj50 mm, thiab tag nrho qhov sib txawv nyob ib ncig ntawm lub cev hauv ib lub band yuav tsum tsis txhob tshaj100 hli.
Rau cov ris tsho ntev - lub tes tsho, yog lub tes tsho thaiv qhov pom tseeb ntawm lub cev ntawm lub cev, lub tes tsho yuav tsum tau ncig los ntawm cov ntaub qhwv ntsej muag; yog tias nws yog tag nrho - lub tes tsho ntev, lub tes tsho yuav tsumob pawgyam tsawg kawg50mm sib nrugnyob rau hauv cov kev cai visibility.
ANSI/ISEA 107-2020 layout txoj cai yog siv-setting tsav
ANSI 107-2020 cov ntsiab lus piav qhia txog kev pom kev hnav khaub ncaws los ntawm kev teeb tsa:
- Hom O: tawm-txoj kev, tsis yog- txoj kev siv
- Hom R: txoj kev thiab thaj chaw tswj kev tsheb khiav ib ntus
- Hom P: Cov neeg teb xwm ceev thiab tub ceev xwm
2020 ANSI cov ntsiab lus tseem qhia qhov tsawg kawg nkaus qhov dav ntawm cov chav kawm:
| ANSI/ISEA 107-2020 Kev Tsim Kho | Yam tsawg kawg Reflective Dav |
|---|---|
| Hom O Chav Kawm 1 | 1in ib. |
| Hom R Chav Kawm 2 | 1.38 ib. |
| Hom R Chav Kawm 3 | 2in ib. |
| Hom P Chav Kawm 2 | 2in ib. |
| Hom P Chav Kawm 3 | 2in ib. |
| Chav Kawm E | 2in ib. |
Kev xeem xav tau kev xav: cov ntaub ntawv nyoos tsis txaus
Ob qhov system yog hais txog lubtsoos tsho tiav, tsis yog cov ntaub ntawv nyoos yob. ISO qhia meej meej tias chav kawm khaub ncaws raug txiav txim siab los ntawm thaj chaw pom hauv cov tsoos tsho, ntsuas ntawm qhov me me, thiab cov cim thiab cov ntawv yuav tsum tsis txhob cuam tshuam qhov tsawg kawg nkaus yuav tsum tau ua. ANSI txhais cov chav kawm ua tau zoo ib feem los ntawm cov khoom siv pom thiab cov qauv tsim tau muab tso rau hauvtsoos tsho tiav.
Qhov ntawd txhais tau hais tias kev yuav khoom yuav tsum tsis pom zoo rau tus neeg muag khoom raws li daim ntawv pov thawj daim ntawv pov thawj. Cov ntaub ntawv txheeb xyuas yuav tsum muaj xws li:
| QA Checkpoint | Vim Li Cas Nws Tseem Ceeb |
|---|---|
| Cov tsoos tsho tiav pom - cheeb tsam xam | Chav kawm yog muab rau ntawm cov khoom tiav, tsis yog ntawm cov ntaub yob ib leeg. |
| Daim kab xev dav txheeb xyuas hauv mm / inches | ISO thiab ANSI cov qhabnias hauv chav kawm yog nyob ntawm qhov tsawg kawg nkaus band dav. |
| Layout kos duab nrog hnab tshos, zipper, thiab cov chaw luam ntawv | Tsis yog - kev cuam tshuam raws li kev cuam tshuam tuaj yeem tshem tawm thaj chaw suav tau. |
| Tsawg tshaj plaws -loj kev pom zoo qauv | Cov qauv ntsuas qhov tsawg tshaj plaws muab qhov loj. |
| Ntxuav- daim ntawv qhia txog kev saib xyuas | Cov neeg yuav khoom xav tau kev tshaj tawm txoj kev saib xyuas los tiv thaiv kev ua tau zoo tshaj qhov kev pabcuam lub neej. ISO sau tseg tias kev siv, av, kev saib xyuas, thiab kev khaws cia cuam tshuam rau kev ua tau zoo. |
Cov ntaub ntawv xaiv cov khoom rau kev yuav khoom engineers
Qhov chaw ua haujlwm yuav tsum muaj kev tiv thaiv los nag ntxiv rau qhov pom, qhov kev sib piv tus qauv yuav tsum zaum nrog lub plhaub- kev tshuaj xyuas kev tsim kho: oxford polyester vs PU-coated plhaub, seam- sealing waterproofing vs stitched - tsuas yog kev tsim kho, thiab daim kab xev kev ruaj ntseg tom qab ntxuav. EN ISO 20471 lossis ANSI 107 kev ua raws cai tsis yog los ntawm nws tus kheej ua pov thawj tsis muaj dej tsis zoo. Qhov ntawd yuav tsum tau kuaj xyuas los ntawm lub plhaub specification thiab ib qho ntxiv cov qauv dej nag uas tau thov los ntawm tus neeg muag khoom. Qhov no yog ib qho kev tshawb nrhiav engineering los ntawm cov peev txheej ntawm cov qauv kev pom pom pom.
Yuav ua li cas pab pawg yuav tsum xaiv cov chaw tsim khoom los ntawm kev ua raws cai hauv zos
Yog tias lub khw muag khoom yog EU
Lub Hoobkas yuav tsum txhawb nqaEN ISO 20471: 2013+A1: 2016thiab PPE txoj kev muab tso rau hauv qabTxoj Cai (EU) 2016/425. Cov nplooj ntawv European Commission cov qauv kev sib haum xeeb hais tias cov qauv kev sib haum xeeb uas tau teev tseg nyob rau ntawd muab kev cia siab ntawm kev ua raws li PPE Txoj Cai, thiab EN ISO 20471 yog ib qho ntawm siab - cov qauv kev pom pom tau hais hauv lub moj khaum no.
Tus neeg yuav khoom yuav tsum thov:
- EU tshaj tawm thiab cov qauv siv raws li qhov chaw muag khoom.
- Ua tiav -cov ntaub ntawv kuaj tsoos tsho rau EN ISO 20471.
- Daim ntawv kos duab uas qhia cov cim hauv chav kawm, txoj kev saib xyuas, thiab qhov loj me.
- Ua ntej- kev pom zoo kos duab qhia qhov chaw paj ntaub, tshav kub- hloov lub logo, lossis cov ntawv xov xwm tuaj yeem muab tso rau yam tsis txo qis qhov pom qhov tsawg kawg nkaus hauv qab chav kawm.
Yog tias lub khw muag khoom yog Tebchaws Meskas
Lub Hoobkas yuav tsum txhawb nqaANSI/ISEA 107-2020kev xaiv los ntawm Hom thiab Kev Ua Haujlwm Chav Kawm. Rau kev siv txoj kev tsheb thiab kev tswj xyuas tsheb ib ntus, US MUTCD 11th Edition tau hais tias cov neeg ua haujlwm hauv thaj chaw tswj kev tsheb mus ib ntus yuav tsum hnav siab - pom kev nyab xeeb kev sib ntsibKev Ua Haujlwm Qib 2 lossis 3Cov kev cai ntawm ANSI/ISEA 107-2015 los yog sib npaug, thiab kev hnav khaub ncaws hmo ntuj yuav tsum ua rawsChav kawm 3. FHWA cov ntawv txhais lus tseem lees paub qhov kev lees paub tom qab kev hloov kho ANSI sib npaug.
Tus neeg yuav khoom yuav tsum thov:
- Daim ntawv lo lus xws liHom R Chav Kawm 2los yogHom R Chav Kawm 3.
- Siv - teeb tsa kev tshaj tawm: tawm -txoj kev, txoj kev, lossis kev nyab xeeb rau pej xeem.
- Qhov tsawg tshaj plaws - qhov loj me ntawm thaj tsam xam yog XS lossis S qhov ntau thiab tsawg yog ib feem ntawm qhov ntau.
- Ntim-cov npe tswj kom tsis txhob sib xyaw hom O Tshuag rau hauv hom R yuav xaj. Qhov no yog ib qho kev tswj xyuas kev muag khoom raws li ANSI cov txheej txheem cais.
Yog tias ib tus neeg muag khoom tau ua haujlwm rau EU thiab Asmeskas cov nyiaj
Ib tus neeg muag khoom hauv Suav teb loj lossis lub Hoobkas yuav tsum cais cov ntaub ntawv hauv qab no:
| Cov Ntaub Ntawv Txheej | EU Account | US Account |
|---|---|---|
| Standard Reference | EN ISO 20471: 2013+A1: 2016 | ANSI/ISEA 107-2020 |
| Classification Logic | Chav Kawm 1/2/3 | Hom O / R / P + Chav Kawm |
| Pom zoo Basis | Tiav tsoos tsho pom cheeb tsam + EU kev ua raws txoj kev | Tiav khaub ncaws pom thaj chaw + Hom/siv- teeb tsa |
| Artwork Control | Logo cheeb tsam vs EN chav kawm | Logo cheeb tsam vs ANSI hom/chav kawm cheeb tsam |
| Warehouse SKU Code | EU-tsuas yog kev ua raws cai | Teb Chaws Asmeskas nkaus xwb raws cai |
Qhov kev sib cais no tseem ceeb heev vim tias tib lub tsho daj daj lub cev tuaj yeem ua tsis tau ib qho kev lag luam txawm tias nws dhau mus rau lwm qhov, nyob ntawm seb qhov dav dav, cov qauv zoo li cas, luam ntawv loj, lossis kawg - siv daim ntawv lo.
Thov OEM Capability Spec Sheet
Rau kev tsim nyog rau tus neeg xa khoom, nug cov ntaub ntawv uas pom pom - thaj chaw cov ntawv txheeb, daim kab xev - cov ntaub ntawv dav, cov ntaub ntawv sau npe, thiab qhov chaw nyob - cov ntaub ntawv pov thawj kev lag luam. Muaj feem cuam tshuam cov khaub ncaws sab nrauv muaj nyob rau hauvSafety Jacketsrau cov tsho quilted, lub plhaub tsis muaj dej, thiab ntau- lub hnab tshos qhov chaw tsim rau EN ISO 20471 lossis ANSI/ISEA 107 cov kev pabcuam.
Tus neeg yuav khoom- sab txiav txim siab matrix rau kev sib tw kev sib tw
| Kev sib tw | Zoo dua Technical Reference | Vim li cas |
|---|---|---|
| EU kev tsim kho distributor muab cov neeg ua haujlwm txoj kev | EN ISO 20471 Chav Kawm 2/3 | Ua ke nrog EU PPE kev ua raws txoj hauv kev thiab EN kev faib tawm. |
| US tus neeg cog lus txoj kev tsheb lossis DOT-txog tus xa khoom | ANSI/ISEA 107 Hom R Chav Kawm 2/3 | MUTCD txuas TTC tus neeg ua haujlwm khaub ncaws rau ANSI Chav Kawm 2 lossis 3 lossis sib npaug. |
| Tub ceev xwm / cov kev pab cuam vests thaum muaj xwm ceev | ANSI/ISEA 107 Hom P | ANSI Hom P yog txhais rau cov neeg teb xwm ceev thiab tub ceev xwm. |
| Tus kheej -label hi-vis vest muag rau hauv EU thiab Asmeskas kev lag luam | Dual{0}}kev txhim kho tshwj xeeb | Sib txawv logic thiab layout txwv. |
Xaus
Qhov sib txawv ntawm EN ISO 20471 thiab ANSI / ISEA 107 yog kev ua haujlwm, tsis yog tshuaj pleev ib ce. ISO 20471 yog thaj chaw-thiab- qhov chaw nyob nruab nrab; ANSI 107-2020 yog hom-thiab- siv nruab nrab. Rau cov khoom siv PPE ntau, cov chaw tsim khoom yuav tsum raug xaiv raws li qhov ua tiav ntawm- kev suav cov khaub ncaws, qhov tsawg tshaj plaws - kev ua raws li qhov loj me, kev tswj cov kab xev, qhov tseeb ntawm daim ntawv lo, thiab cov ntaub ntawv hauv khw muag khoom.
Rau cov neeg xa khoom, EPC cov neeg cog lus, thiab HSE- coj cov neeg yuav khoom, txoj kev txhim khu kev qha tshaj plaws yog kom tsim nyog rau lub Hoobkas uas tuaj yeem khiav cais EN thiab ANSI cov ntaub ntawv ntoo, tsis yog lub Hoobkas uas tsuas yog hloov lub hangtag. Rau qeb npaj, pib nrog Safety VestthiabSafety Jackets, tom qab ntawd tsim kom muaj qhov dav dav siab - pom kev nyob ib puag ncig tib yam kev ua raws li - txheej txheem tswj.
FAQ
Q: Dab tsi yog MOQ rau OEM siab -Visibility Vests lossis Jackets Los ntawm Tuam Tshoj Hoobkas?
A: MOQ yog lub Hoobkas- tshwj xeeb, tsis tau txhais los ntawm EN ISO 20471 lossis ANSI / ISEA 107. Rau OEM xaj, cov neeg yuav khoom yuav tsum thov MOQ los ntawm cov ntaub xim, hom kab xev, thiab cov txheej txheem logo vim tias peb yam khoom no tsav ntau lawm batching thiab ua raws li kev tswj hwm.
Q: Puas Muaj Kev Cai Luam Ntawv Sau lossis Kub Kub - Hloov Logo Txo Cov Khaub Ncaws Cov Ntawv Pov Thawj?
A: Yog. ISO 20471 hais tias lub logo, ntawv sau, thiab cov ntawv cim yuav tsum tsis txhob txo qhov tsawg kawg nkaus pom qhov xav tau rau kev faib tawm. Tib qhov laj thawj engineering siv rau ANSI tiav - kev pom zoo hauv chav kawm khaub ncaws. Ib txwm pom zoo lub logo loj thiab txoj haujlwm ua ntej ntau lawm.
Q: Cov ntaub ntawv dab tsi uas kuv yuav tsum tau nug ua ntej pom zoo Tus Tshiab Nyob Zoo-Vis PPE Chaw Muag Khoom?
A: Nug rau tus qauv qauv, ua tiav- daim ntawv tshaj tawm kev xeem tsoos tsho, pom - daim ntawv xam phaj, daim ntawv kos duab, qhov tsawg tshaj plaws - qhov kev pom zoo ua raws li qhov loj me, thiab qhov chaw tshaj tawm - kev lag luam. Rau US txoj kev ua haujlwm, paub meej tias Hom R Chav Kawm 2 lossis 3 qhov twg xav tau los ntawm txoj haujlwm.
