Hluav taws kub-Rated MGO Board Magnesium Oxide Sab nrauv phab ntsa vaj huam sib luag rau kev faib
Hluav taws kub-Rated MGO Board (Magnesium Oxide Partition & Exterior Wall Board) yog cais raws li Chav Kawm A1 Tsis yog-Cov Khoom Siv Hluav Taws Xob, qib hluav taws kub siab tshaj plaws rau cov khoom siv hauv tsev, dhau peb qhov kev ntsuam xyuas tseem ceeb: tsis yog-combustibility, qis calorific nqi, thiab cov pa luam yeeb tsawg. Cov ntawv pov thawj no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau sab nrauv phab ntsa ntawm siab - cov tsev nce siab, firewalls, thiab siab -kev nyab xeeb- qhov chaw yuav tsum muaj, muab kev tiv thaiv hluav taws siab tshaj plaws.
- Kev xa khoom sai
- Quality Assurance
- 24/7 Kev Pabcuam Cov Neeg Siv Khoom
Khoom Taw qhia
Peb yog ib lub tuam txhab mob siab rau cov khoom lag luam magnesia cement. Peb cov khoom tseem ceeb yog Magnesium Oxide Boards (MGO Board) rau kev tsim kho thiab laminated MgO boards nrog rau rooj tog thiab kho dua tshiab. Peb lub luag haujlwm yog muab lub ntiaj teb kev tsim kho kev lag luam nrog ib puag ncig tus phooj ywg, siab -kev ua tau zoo thiab cov ntaub ntawv ntsuab ruaj khov.
Peb ua haujlwm nrog Tuam Tshoj Magnesium Materials Association (CMMA) thiab Magnesium Oxide Association (MOCA) hauv North America los txhawb kev paub thiab txhawb kev siv cov khoom siv magnesium oxide cement. Peb tsom mus rau kev tswj kom zoo thiab sib xws ntawm MGO cov khoom. Peb tau koom tes nrog kev tsim kho American Society for Testing and Materials (ASTM) cov qauv ntsig txog MGO cov khoom.
Vim li cas thiaj xaiv US
1. Sab saum toj -Tier Fire Resistance & Stable Quality: Tshwj xeeb hauv magnesium sulfate-raws li hluav taws- ntsuas MGO boards, ntawv pov thawj Class A1 tsis yog-combustible (GB 8624}/EN 13501-1), ya raws- pov thawj, tsis muaj efflorescence, corrosion-resistant, nrog rau kev pab cuam lub neej nyob deb ntawm kev ruaj ntseg vaj huam sib luag.
2. Daim ntawv pov thawj thoob ntiaj teb: Cov khoom lag luam tuav CE, ASTM, ISO thiab lwm yam ntawv pov thawj thoob ntiaj teb, ua raws li cov cai hauv tsev nyob hauv ntau cheeb tsam thoob ntiaj teb. Mature export cov txheej txheem xyuas kom koj tej yaam num hla lub zos zoo soj ntsuam smoothly.
3. Loj -Sale Ntau Lawm & Kev xa khoom sai: Nruab nrog lub hauv paus tsim khoom niaj hnub thiab cov kab ntau lawm, peb khav theeb txaus txhua xyoo los txhawb kev txiav txim ntau nrog cov lus teb sai. Lub sijhawm ua haujlwm luv tshaj plaws + suab logistics system lav rau ntawm - lub sijhawm ua haujlwm ua haujlwm.
4. Kev daws teeb meem rau ntau haiv neeg xav tau: Muab customized board thickness (3-25mm), qhov ntev, nto finishes thiab hluav taws kub ratings, flexibly ua tau raws li qhov yuav tsum tau ntawm sab nrauv phab ntsa, partitions, tshwj xeeb engineering thiab lwm yam kev thov scenarios.
5. Kev Pabcuam Kev Pabcuam Kev Ua Haujlwm & Tag Nrho -Cycle Service: Muab ib qho - nres kev pabcuam los ntawm kev xaiv cov khoom, kev sib tham txog kev qhia txog kev teeb tsa. Peb pawg kws tshaj lij engineering daws teeb meem ua ntej- muag thiab tom qab- teeb meem muag sai, txo kev pheej hmoo ntawm kev koom tes.
6. Ntsuab & Eco-Nyob zoo, Aligning nrog yav tom ntej Trends:Formaldehyde-dawb, asbestos-dawb thiab 100% recyclable, peb cov khoom ua raws li LEED ntsuab qauv qauv, pab cov neeg muas zaub tsim eco- raws li tej yaam num thiab txhim khu kev sib tw hom.
Magnesium oxide phab ntsa vaj huam sib luag yog cov khoom siv thev naus laus zis hauv tsev uas muaj kev ua tau zoo tshaj plaws hauv txhua pawg thaum piv rau cov khoom siv ntoo, gypsum thiab cement.
Magnesium Oxide Phab Ntsa Panels
Magnesium Oxide Phab Ntsa Panels yog cov khoom siv cementitious substrate ntxiv nrog magnesium oxide fiber matting.
Hluav taws kub resistant magnesium oxide wallboard yog ib yam tshiab ntawm cov khoom siv refractory. Nws yog dav siv feem ntau raws li phab ntsa board lwm txoj rau cov pa gypsum -raws li drywall thiab plywood.
Hluav taws kub Resistant Board
Nws tsis yog combustible thiab hluav taws kub nyob rau hauv chav kawm A1. Nrog rau kev xaiv txog li 2 teev hluav taws kub tsis kam, MgO Board muaj qhov kev tiv thaiv hluav taws tshiab tshiab rau koj qhov kev tsim kho.
MgO board muaj kev ua haujlwm zoo heev. Nws tsis kis nplaim taws lossis pa taws. Nws yog noncombustible thiab hluav taws kub- ntsuas A1, uas pab tiv thaiv cov tswv tsev, cov neeg xauj tsev thiab cov neeg nyob hauv tsev thaum txo kev puas tsuaj thiab poob.
Magnesium oxide phab ntsa board yog tsim los ntawm magnesium oxide, magnesium sulfate los yog magnesium chloride, iav fiber mesh, perlite thiab ntoo fiber.
Nws yog ib qho khoom kho dua tshiab ntawm fireboard. Kev tsim kho kom zoo nrog peb MgO fireproof phab ntsa board tuaj yeem ua tiav 3-teev fireproof ntsuas.
Hluav taws kub Resistant Internal Wall Board
Peb Cov Hluav Taws Xob Hluav Taws Xob Internal Phab Ntsa Board yog fiberglass reinforced magnesium oxide cement board. Nws tuaj yeem siv los hloov cov tsoos gypsum drywall rau phab ntsa thiab qab nthab tiav thiab sheathing.
Fireproof Sab nrauv phab ntsa Panels
Magnesium oxide board yog ib yam tshiab ntawm hluav taws kub -cov khoom siv hauv tsev. Cov ntaub ntawv tseem ceeb yog magnesium oxide, magnesium chloride / sulfate thiab perlite.
MGO Board(Magnesium Oxide Board), tseem hu ua magnesium oxide board, magnesite board, los yog magnesium-raws li board, yog ib tug siab -cov khoom siv hauv tsev nrog magnesium oxide (MgO) ua cov khoom tseem ceeb. Nws yog ib lub vaj huam sib luag tsim los ntawm kev sib txuas ntawm MgO nrog magnesium chloride (MgCl₂) lossis magnesium sulfate (MgSO₄) tov, ntxiv nrog iav fiber ntau mesh, thiab sib xyaw nrog cov khoom hnyav.
Qhov zoo ntawm Hluav Taws-Rated MGO Board Magnesium Oxide Sab nrauv phab ntsa vaj huam sib luag rau kev faib
1. Kev tiv thaiv hluav taws zoo heev:
- Chav Kawm A1 Tsis yog-Cov Khoom Siv Hluav Taws Xob(raws li European Standard EN 13501-1), kiag li tsis yog -flammable thiab non-combustion-txhawb.
- Kub kub tsis kam (txog 1200℃+), tsis muaj pa phem los yog gases tso tawm thaum combustion.
- Kev tiv thaiv hluav taws ntev ntawm 1-4 teev (nyob ntawm qhov tuab thiab qauv).
- Tso dej vapor nyob rau hauv qhov kub thiab txias (endothermic cov tshuaj tiv thaiv) kom qeeb hluav taws sib kis.
2. Moisture, Pwm & Kab Resistance:
- Tsis yog -absorbent thiab impermeable, nrog noo noo kuj zoo dua rau gypsum board.
- Pwm- ib puag ncig dawb, haum rau thaj chaw ntub dej xws li chav dej thiab chav ua noj.
- Ntuj tiv thaiv kab mob thiab lwm yam kab tsuag (tsis muaj khoom noj khoom haus).
3. Kev ua tau zoo ntawm cov qauv:
- Lub teeb tsis tau siab -lub zog: Qhov ntom ntawm kwv yees li . 0.95-1.1g / cm³, nrog lub zog 2-3 npaug ntawm gypsum board.
- Impact-resistant, deformation-resistant, tawg{2}}resistant, thiab ruaj.
- Cov ntsia hlau zoo heev- tuav lub peev xwm kom yooj yim installation thiab kho.
4. Environmental Friendliness:
- Tsis muaj asbestos, formaldehyde, benzene, thiab lwm yam khoom tsis zoo.
- 100% recyclable, ua raws li cov qauv tsev ntsuab.
- Kev siv hluav taws xob qis dua li cov cement (700-1400℃vs . 1400℃rau cement).
- Tsis muaj volatile organic compounds (VOCs) emission.
Kev tsim cov txheej txheem ntawm hluav taws kub-Rated MGO Board Magnesium Oxide Sab nrauv phab ntsa vaj huam sib luag rau kev faib
Core Classifications:
| Hom | Cov Cheebtsam | Nta | Daim ntawv thov Scenario |
|---|---|---|---|
| Magnesium Chloride-Based MGO Board(Traditional Magnesite Board) | MgO + MgCl₂ | Tus nqi qis dua, tab sis nws tuaj yeem nqus dej noo, efflorescence, thiab hlau corrosion | Qhuav sab hauv ib puag ncig, sab hauv partitions |
| Magnesium Sulfate-Raws li MGO Board(Tshiab-Generation Magnesium Sulfate Board) | MgO + MgSO₄ | Cov dej noo- pov thawj, tsis muaj efflorescence, tsis yog -corrosive rau hlau, thiab kev ua haujlwm ruaj khov dua | Sab nrauv phab ntsa, qhov chaw ntub dej, ntev -cov haujlwm engineering |
Cov khoom sib xyaw & txheej txheem ntau lawm
1. Cov ntsiab lus tseem ceeb:
- Magnesium Oxide (MgO, kwv yees . 56-58%): Cov khoom siv tseem ceeb muab lub zog siab thiab hluav taws kub, nrog rau qhov kub ntawm qhov kub txog li 2800 degree.
- Hloov kho: MgCl₂ (tseem ceeb) los yog MgSO₄ (tshiab- hom), reacting nrog MgO los tsim ib tug cementitious matrix.
- Cov khoom siv txhawb zog: Nruab nrab-alkaline iav fiber ntau mesh rau txhim kho flexural zog thiab toughness.
- Filler Khoom: Lub teeb yuag perlite, cog fibers, thiab lwm yam, txo qhov hnyav thiab txhim kho thermal rwb thaiv tsev.
- Cov tshuaj ntxiv: Polymer compounds thiab modifiers los txhim kho kev ua tau zoo thiab kev ua haujlwm.
2. Cov txheej txheem ntau lawm:
- Sib tov magnesium oxide hmoov nrog kev daws teeb meem los tsim magnesium -raws li cementitious sib tov.
- Ntxiv cov khoom siv ntxiv thiab cov fillers, ces do uniformly.
- Pwm tsim los ntawm dov los yog extrusion.
- Kho nyob rau hauv chav tsev kub los yog kub tsis tshua muaj (700-1400 degree) los tsim panels ruaj khov.
- Txiav thiab nto - kho (sandblasted lossis du tiav).
Technical Parameters & Specifications
1. Txuj Specifications:
- Qhov ntevLoj: 1200 × 2400mm; kuj muaj nyob rau hauv 1200 × 2700mm, 1200 × 3000mm.
- Thickness: 3-25mm (9-12mm rau sab nrauv phab ntsa, 6-9mm rau partitions).
- Qhov ntom: 0.95-1.2g / cm³, lub teeb yuag rau kev thauj mus los yooj yim thiab kev teeb tsa.
2. Cov Ntsuas Hluav Taws Xob:
- Combustion Performance: Chav Kawm A Tsis yog-Combustible (GB 8624), ntsib ASTM E136 tus qauv.
- Kev ntsuas hluav taws kub: 60-240 feeb (nyob ntawm tus qauv), nrog rau cov txheej txheem partitions ua tiav 1 teev.
- Haus luam yeeb ntom: Ze li xoom, tsis muaj pa taws hnyav cuam tshuam kev khiav tawm thaum muaj hluav taws kub.
Hluav taws kub-Rated MGO Board Magnesium Oxide Sab nrauv phab ntsa vaj huam sib luag rau kev faib
Daim ntawv thov Scenario
1. Sab nrauv phab ntsa Systems:
Cladding rau siab- cov tsev nce siab, hloov cov plywood tsoos thiab gypsum board.
Substrate rau sab nraud thermal rwb thaiv tsev tshuab (EIFS), muab kev tiv thaiv hluav taws.
Curtain phab ntsa backing boards txhim khu kev ruaj ntseg thiab hluav taws kub.
2. Sab hauv Partitions:
Hluav taws kub- ntsuas qhov sib faib (tshaj li 1 teev hluav taws kub) rau cov tsev lag luam, tsev kho mob, thiab tsev kawm ntawv.
Muab faib rau hauv siab -cov av noo xws li chav ua noj thiab chav dej, nrog rau cov dej noo thiab pwm.
Phab ntsa vaj huam sib luag rau lub suab rwb thaiv tsev, thermal rwb thaiv tsev, thiab txhim kho kev ceev ntiag tug.
3. Cov ntawv thov tshwj xeeb:
Firewalls thiab staircase enclosures kom muaj kev nyab xeeb ntawm kev khiav tawm.
Hluav taws kub compartments nyob rau hauv industrial rhiav thiab warehouses los tiv thaiv hluav taws.
Kev kho dua tshiab ntawm cov vaj tsev qub, hloov cov khoom qub los txhim kho kev nyab xeeb.
Modular tsev rau prefabrication thiab ntawm -site ceev installation.
Kev sib piv nrog cov khoom siv hauv tsev
| Kev ua tau zoo | MGO Board | Gypsum Board | Cement Board | OSB Board |
|---|---|---|---|---|
| Hluav taws kub tsis kam | Chav Kawm A1 Tsis yog-Combustible, 1-4h hluav taws kub | Class B1 nplaim taws-Retardant, ~ 30min hluav taws kub | Zoo, ~ 1h hluav taws kub | Flammable, tsis muaj hluav taws kub |
| Moisture Resistance | Zoo heev, tsis-absorbent, tsis- o | Tsis zoo, softens thiab deforms thaum ntub | Zoo, tab sis hnyav | Tsis zoo, nws yooj yim rau kev nqus dej thiab deformation |
| Lub zog | Siab, flexural zog Ntau dua los yog sib npaug rau 15MPa | Tsawg, yooj yim tawg | Siab, tab sis hnyav | Nruab nrab, yooj yim rau deform |
| Durability | Zoo heev, tiv thaiv -aging, lub neej ua haujlwm ntev | Nruab nrab, luv luv kev pab cuam lub neej nyob rau hauv ib puag ncig ntub | Zoo, tab sis nquag tawg | pluag, yooj yim rau lwj |
| Environmental Friendliness | Tsis yog - tshuaj lom, rov ua dua tshiab | Nruab nrab, muaj gypsum | Nruab nrab, siab zog noj | Muaj cov kua nplaum, emits VOCs |
| Qhov hnyav | Lub teeb (6-12kg / ㎡) | Nruab nrab (8-15kg / ㎡) | Hnyav (25-40kg / ㎡) | Nruab nrab (10-18kg / ㎡) |
Installation Methods & Cov ntsiab lus tseem ceeb
1. Cov Khoom Siv & Cov Khoom Siv:
Khoom siv: MGO boards, xeb-cov ntsia hlau tiv taus (316 stainless hlau pom zoo), sealing daim kab xev / cov nplaum nplaum.
Cov cuab yeej: Daim kab xev ntsuas, ncig pom nrog pob zeb diamond hniav, hluav taws xob laum, ntswj ntsia hlau, qib.
2. Cov kauj ruam installation:
Kauj Ruam 1: Ntsuas & Txiav
Ntsuas qhov ntsuas thaj tsam thiab kos cov laug cam.
Txiav nrog pob zeb diamond hniav rau cov npoo zoo.
Kauj Ruam 2: Kev npaj substrate
Ntxuav lub hauv paus txheej kom nws tiaj tus thiab tsis muaj cov khib nyiab.
Xyuas tias cov ntoo / steel stud ncej yog qib thiab ruaj ntseg.
Kauj Ruam 3: Kev teeb tsa Board
Pib los ntawm hauv qab thiab nruab horizontally, aligning board npoo.
Kho nrog xeb-cov ntsia hlau tiv taus (qhov sib nrug: 150mm ntawm ntug, 300mm hauv nruab nrab).
Tawm 3-5mm expansion qhov sib txawv ntawm cov laug cam.
Kauj Ruam 4: Kev Kho Mob Sib Koom
Sau qhov khoob nrog kev sib koom ua ke tshwj xeeb thiab embed iav fiber ntau mesh.
Npog nrog daim kab xev los yog cov nplaum nplaum kom tiv thaiv kom tsis txhob ya raws.
Kauj ruam 5: Nto Finishing
Nws tuaj yeem raug pleev xim ncaj qha, pobzeb, lossis npog nrog cov vaj huam sib luag zoo nkauj.
3. Kev Ceeb Toom:
Yuav tsum sivxeb-resistant fasteners(316 stainless hlau) kom tsis txhob xeb los ntawm chloride ions.
Rau kev siv phab ntsa sab nrauv,tag nrho foob board pob qij txhalos tsim ib qho kev thaiv dej tsis haum.
Hnav lub ntsej muag plua plav thaum txiav kom tsis txhob nqus plua plav.
Kev Ntsuas Hluav Taws Xob rau Hluav Taws Xob -Rated MGO Board Magnesium Oxide Sab nrauv Phab Ntsa Vaj Huam Sib Luag rau Kev faib
MGO Board (Magnesium Oxide Board) raug cais raws li Chav Kawm A1 Tsis yog-Cov Khoom Siv Hluav Taws Xob, covqib hluav taws kub siab tshaj plawsrau cov khoom siv hauv tsev, ua raws li ob qho kev tso cai thoob ntiaj teb: Tuam Tshoj tus GB 8624-2012 thiab European EN 13501-1.
1. Kev piav qhia ntxaws ntawm Suav Standard (GB 8624-2012)
GB 8624-2012 "Kev faib tawm rau Kev Ua Tau Zoo ntawm Cov Khoom Siv Hauv Tsev thiab Cov Khoom Siv" faib cov ntaub ntawv rau hauv cov qib hauv qab no:
| Qib | Kev faib tawm | combustion yam ntxwv |
|---|---|---|
| Chav Kawm A(Tsis yog-Cov Khoom Siv Hluav Taws Xob) | A1A2 | Tsis yog-flammable, tsis yog-combustion-txhawb, tsis muaj nplaim taws Yuav luag tsis muaj cua sov pab, tsis tshua muaj pa taws toxicity |
| Chav Kawm B/C(Nplaim-Retardant/Combustible) | B1, B2B3 (tseem siv tsis tau) | Nplaim taws-tawv tawv, combustible, yooj yim rau tso pa taws |
MGO Board tau ntawv pov thawj raws li Class A1 Tsis yog-Cov Khoom Siv Hluav Taws Xobthiab yuav tsum xeem dhau cov kev xeem tseem ceeb hauv qab no:
- Tsis yog -Combustibility Test(GB/T 5464): Tsis muaj hluav taws kub los yog hluav taws kub ntawm 750℃cub tawg.
- combustion Calorific nqi Test(GB/T 14402): Calorific nqi Tsawg dua los yog sib npaug rau 2 MJ / kg, muab yuav luag tsis muaj combustion zog.
- Kev Ntsuas Kev Haus Luam Yeeb: Cov khoom siv hluav taws xob tsis yog - lom, tsis cuam tshuam kev khiav tawm ntawm cov neeg ua haujlwm.
2. Kev piav qhia ntxaws ntawm International Standard (EN 13501-1)
European Standard EN 13501-1 yog sib npaug rau Tuam Tshoj tus GB 8624-2012, kuj faib cov ntaub ntawv los ntawm Chav Kawm A1 txog F. Ntawm lawv:
Chav Kawm A1 (Highest Non-Qib Hluav Taws Xob) Cov Ntawv Pov Thawj Yuav Tsum Tau:
- HlaEN ISO 1182 Tsis yog -Combustibility Test: Tsis muaj combustion lossis carbonization ntawm qhov kub thiab txias.
- HlaTS EN ISO 1716 Kev Ntsuas Tus Nqi Calorific: Tsis tshua muaj nqi calorific, tsis txhawb kev sib kis hluav taws.
- Tsis kub hnyiabkom tsis txhob muaj hluav taws kub.
- Kev ntsuas pa luam yeebmus txog s1 (tsis tshua muaj pa luam yeeb ntom ntom) thiab d0 (tsis muaj tee dej).
3. Vim li cas MGO Board tuaj yeem ua tiav Chav Kawm A1 Standard?
Cov laj thawj tseem ceeb:
- Cov khoom tseem ceeb ntawm magnesium oxide (MgO) yog cov khoom tsis muaj zognrog lub melting point txog li 2800 degree, ruaj khov chemical zog, thiab tsis yog -flammable.
- Tso dej khi rau hauv qhov kub thiab txias, absorbing tshav kub los inhibit hluav taws kis.
- Tsis muaj organic Cheebtsam, yog li tsis muaj cov pa phem (xws li formaldehyde, benzene) raug tso tawm thaum lub sij hawm combustion.
- Cov qauv ruaj khov, tsis softening lossis deforming ntawm qhov kub thiab txias, tswj kev ruaj ntseg ntawm phab ntsa.
4. Kev ntsuas hluav taws kub (Fire Duration) Indicator
Ntxiv nrog rau qib kev ua haujlwm combustion, MGO Board kuj muajqhov ntsuas hluav taws kub(unit: teev), qhia lub sij hawm cov khoom muaj peev xwm tswj cov txheej txheem kev ncaj ncees thiab thermal rwb thaiv tsev thaum hluav taws kub:
| Board Thickness | Qhov ntsuas hluav taws kub tsis kam | Daim ntawv thov Scenario |
|---|---|---|
| 6-9 hli | 1-2 teev | Sab hauv partitions |
| 12 hli | 2-3 teev | Sab nrauv phab ntsa, firewalls |
| 15-25 hli | 3-4 teev | Siab -xav tau qhov hluav taws kub |
Test StandardsGB / T 9978 lossis ASTM E119, ntsuas cov khoom siv:
Kev ncaj ncees (E): Tsis muaj kab nrib pleb.
Rwb thaiv tsev (I): Backside kub nce tsis tshaj qhov txwv.
Load-Bearing Peev Xwm (R): Kev saib xyuas ntawm cov qauv kev ruaj ntseg.
5. Kev sib piv ntawm International Certifications
| Ntawv pov thawj Standard | Kev ntsuas hluav taws kub ntawm MGO Board | Cov Ntsiab Lus Xeem |
|---|---|---|
| Tuam Tshoj GB 8624-2012 | Class A1 Tsis yog-Combustible | Tsis yog -combustibility, tsawg calorific nqi, tsawg pa luam yeeb toxicity |
| TS EN 13501-1 Europe | Class A1 Tsis yog-Combustible | EN ISO 1182/1716 kev xeem |
| USA ASTM E136 | Tsis yog -Cov Khoom Siv Hluav Taws Xob | Tsis muaj combustion nyob rau hauv 750℃ntsug rauv |
| USA ASTM E119 | 1-4 teev hluav taws kub | Cov qauv kev ncaj ncees thiab kev ntsuas rwb thaiv tsev |
6. Daim ntawv thov tseem ceeb
- Chav Kawm A1 tsis yog- ntawv pov thawj hluav taws kub ua rau MGO Board tsim nyog rau ntau yam siab -kev nyab xeeb:
- Sab nrauv phab ntsa ntawm siab -nce vaj tse: Muab kev tiv thaiv hluav taws ntau tshaj plaws los tiv thaiv hluav taws xob sib kis.
- Partitions nyob rau hauv cov tsev lag luam: Faib qhov hluav taws kub kom ntseeg tau tias kev khiav tawm ntawm cov neeg ua haujlwm nyab xeeb.
- Tsev kho mob thiab tsev kawm ntawv: Cov chaw sib sau ua ke rau pej xeem xav tau cov qauv kev nyab xeeb hluav taws kub siab tshaj plaws.
- Kev cob qhia kev lag luam: cais thaj chaw flammable kom txo tau hluav taws.
- Tunnels thiab subways: Cov chaw kaw yuav tsum tsis muaj - cov pa luam yeeb thaum lub sij hawm combustion.
FAQ
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