Yo (43 Duab): Nws Yog Dab Tsi? Hom - Kev Tsim Kho Thiab Lo, Xim Thiab Dawb, Lub Teeb Yuag Thiab Tsis Muaj Kuab Lom, Ib Puag Ncig Phooj Ywg Thiab Lwm Yam Ntxwv

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

Plywood yog cov khoom sib xyaw ua los ntawm ntoo ntuj. Nws suav nrog cov ntawv tsim los ntawm gluing 3 lossis ntau txheej ntoo. Cov khoom siv yog qhov tshwj xeeb muaj zog thiab ruaj khov nrog kev hloov pauv hauv cov av noo, thaum nws sib piv nrog cov ntoo zoo.

Nws yog dab tsi?

Plywood yog cov khoom siv ntau txheej uas tau los ntawm gluing cov ntawv ntawm cov ntoo nyias nyias. Nws yog tus yam ntxwv los ntawm kev tiv taus kom khoov thiab ua kom cov neeg kho tshuab deformation - qhov no yog ua tiav vim cov qauv tshwj xeeb ntawm cov khoom siv . Cov veneer cov ntawv siv rau kev tsim cov plywood tau muab sib dhos rau saum ib sab kom qhov kev taw qhia ntawm cov fibers hloov pauv. Raws li qhov tshwm sim, nyob rau hauv ib qho kev ua haujlwm txhua yam, txhua daim ntawv tsim kev cuam tshuam hauv nws cov lus qhia thiab, vim li ntawd, them nyiaj rau lub zog deformation ntawm cov txheej uas seem.

Kev tsim cov plywood yog txheej txheem ua haujlwm ntau theem uas yuav tsum tau ua tib zoo xaiv cov khoom siv raw . Hauv thawj theem, cov cav tau kho nrog dej sov. Nyob rau hauv kev cuam tshuam ntawm dej thiab qhov kub thiab txias, cov ntoo ntoo tau txais kev ywj pheej txaus, tom qab ntawd cov tawv ntoo tau ua tib zoo tshem tawm hauv kev teeb tsa tshwj xeeb thiab tev tau ua tiav.

Lub tshuab tshwj xeeb yaj ntoo mus rau hauv cov veneers nyias - txheej txheem, txheej txheem zoo ib yam li ua kom cov xaum qhuav . Raws li qhov tshwm sim, daim kab xev nyias nyias nrog kev txiav ntawm 1-3 hli yog tsim los ntawm lub cav.

Lub veneer raug txiav rau hauv cov ntawv cais raws li qhov ntsuas ntawm plywood . Lawv qhuav zoo, tom qab ntawd lawv tau lo nrog kua nplaum, quav thiab txias txias. Qhov ua tsis tau tiav yog nias dua, twb tau ua qhov ntsuas kub ntau - qhov no ua rau polymerization ntawm cov khoom tseem ceeb nplaum. Rau lub zog ntau dua, qhov ua tau slabs tau ntxiv rau hauv cov pawg loj, qhov uas lawv pw hauv qab lawv tus kheej qhov hnyav tsawg kawg 20 teev.

Tau kawg, plywood tsis tuaj yeem hloov ntoo, txawm li cas los xij, nws muaj nws qhov zoo:

• tus nqi pheej yig;
• yooj yim;
• yooj yim ntawm kev teeb tsa;
• siab thermal conductivity;
• soundproofing;
• tiv taus pwm, fungi thiab lwm yam kab mob microflora.

Txawm li cas los xij, plywood muaj nws qhov tsis zoo:

• ntshai ntawm ya raws;
• tsawg, hauv kev sib piv nrog ntoo, tsis ua haujlwm;
• nyob rau hauv cov ntaub ntawv ntawm cov khoom puas rau plywood, nws delamination yog ua tau.

Muaj pes tsawg leeg thiab cov khoom

Tsis yog txhua hom ntoo muaj txheej txheej tsim nyog rau kev tsim cov plywood los xij. Qhov feem ntau yog coniferous ntau yam thiab birch. Thiab tseem plywood yog ntoo qhib lossis beech, tsawg dua nws tau ua los ntawm poplar, tshauv, ntxiv rau linden, maple lossis xyoob ntoo txawv. Dhau li, combo panels tuaj yeem pom ntawm muag - lawv tau los ntawm ntau hom ntoo.

Birch . Xws li cov plywood yog 85-95% cov khoom siv ntoo birch, nws suav tias yog cov khoom muaj zog tshaj plaws los ntawm txhua qhov khoom muaj nyob hauv khw muag khoom. Qhov ntom ntawm cov khoom siv no sib xws rau 600-700 kg / m3. Nws yog 20% muaj zog dua nws cov ntoo thuv. Nws yog qhov txawv los ntawm cov qauv sib xws thiab zoo nkauj zoo nkauj. Resinousness tsis nyob.

Coniferous . Ib puag ncig phooj ywg plywood, conifers tau siv rau kev tsim cov khoom siv no. Ua tsaug rau cov resins uas tshem tawm cov fungi thiab pwm, nws tiv taus kom lwj. Pine plywood feem ntau muag hauv Russia.

Ua ke, hom muaj zog tshaj plaws ntawm plywood . Raug ua raws li txoj hauv kev kom ua tiav kev tiv thaiv siab rau txhua yam ntawm cov khoom siv sab nraud cuam tshuam. Ntau hom ntoo sib txawv tau siv ntawm no. Raws li txoj cai, cov tub ntxhais tau tsim los ntawm cov ntoo ntoo lossis ntoo thuv, thiab sab nrauv yog ua los ntawm cov ntoo tawv nrog cov qauv zoo nkauj.

Ib hom cais ntawm cov plywood yog OSB cov laug cam - lawv tau tsim los ntawm nias cov plaub hau thiab sawdust.

Plywood muaj tus lej ntawm cov yam ntxwv sib txawv

• Lub zog . Ncaj nraim nyob ntawm hom ntoo, nrog rau cov yam ntxwv ntawm gluing. Feem ntau yog li ntawm 500-750 kg / m3.
• Ib puag ncig phooj ywg . Cov yam ntxwv lom ntawm plywood tau txiav txim siab los ntawm nws cov chav kawm tso tawm. Rau kev teeb tsa hauv thaj chaw nyob, koj yuav tsum yuav tsuas yog cov khoom siv ib puag ncig zoo nrog qib kev tso tawm ntawm E1 lossis tsawg dua. Txhua lwm yam ntau yam, rau ib qib lossis lwm qhov, tuaj yeem yog cov khoom siv ntawm formaldehyde thiab ua rau muaj kev phom sij rau kev noj qab haus huv.
• Kev tiv thaiv lom . Qhov no tsis tau hais tias plywood tau tiv thaiv tag nrho los ntawm pwm thiab rot. Txawm li cas los xij, nws qhov kev tiv thaiv rau lawv ntau dua li ntawm cov ntoo zoo tib yam. Qhov no yog vim qhov tseeb tias plywood muaj phenolic nrog rau urea resins, lawv ua raws li cov tshuaj tua kab. Txawm li cas los xij, nws raug nquahu kom kho qhov saum npoo nrog cov tshuaj tua kab mob ua ntej siv.
• Flammability . Plywood tau muab cais ua cov khoom lag luam nrog cov nplaim taws siab - qhov no yuav tsum nco ntsoov thaum siv nws.

Thaum nplaim hluav taws kub hnyiab tau ntxiv rau cov nplaum ua ke, cov ntoo uas tsis tuaj yeem sib txuas tau ntau yam.

Plywood feem ntau siv los tsim cov laj kab sab nraum zoov, thiab thaum siv qhov no, nws cov yam ntxwv tiv thaiv yuav tsum raug coj mus rau hauv tus account

• Hws noo permeability . Cov khoom tuaj yeem nqus dej, thaum ntub dej ntawm ib sab, dej yuav poob ntawm qhov tsis sib xws, thiab nws tseem tuaj yeem hloov mus rau cov khoom siv uas nyob ib sab. Txawm li cas los xij, nws cov permeability yog capillary hauv qhov.
• Kev ua kom sov . Qhov ntsuas no ncaj qha nyob ntawm qhov ntom ntom ntawm cov khoom, feem ntau nws tau teeb tsa los ntawm 0.1 txog 0.25 W / (m • K). Cov cua sov ua kom sov ntawm cov npe nrov tshaj plaws nyob ze ntawm cov ntoo ntuj.
• Dej ua pa permeability . Cov pa permeability ntawm cov ntawv yog yuav luag 2, 5-3 zaug qis dua qhov zoo sib xws ntawm cov ntoo thiab 5 zaug tsawg dua li ntawm kev ua cib. Tias yog vim li cas plywood feem ntau yuav rau vapor barrier ntawm phab ntsa sab hauv.

Saib

Plywood tuaj yeem raug cais raws li ntau yam txheej txheem.

Los ntawm tus naj npawb ntawm txheej

Plywood tuaj yeem muaj ob peb nplooj ntawv ntawm veneer. Qhov dav tshaj plaws yog cov khoom siv peb txheej, lawv muaj tuab 3-4 hli. Thiab tseem cov khoom muaj zog tau nthuav tawm hauv khw muag khoom:

• 5 txheej - 6 hli;
• 7 txheej - txog 9 hli;
• 9 txheej - 12 hli;
• 11 txheej - 15 hli;
• 13 txheej - txog 18 hli;
• 15 txheej - 21 hli;
• 17 txheej - 24 hli;
• 19 txheej - 27 hli;
• 21 txheej - txog 30 hli.

Los ntawm kev tiv thaiv ya raws

Hauv kev tsim cov ntawv plywood, tau siv cov nplaum, yog li cov khoom muaj cov dej tsis haum. Muaj ntau ntau yam.

• FC yog cov khoom tiv taus ya raws . Rau gluing veneer, kua nplaum raws li urea-formaldehyde cob tau siv. Thaum yuav khoom, koj yuav tsum tau them sai sai rau chav tso pa tawm - nws yuav tsum tsis pub ntau tshaj E1, qhov tsis zoo ntawm cov phaj no tsawg heev.
• FSF yog cov khoom siv ntawm kev tiv thaiv ya raws ntau ntxiv . Nov yog siv cov kua nplaum ib yam, tsuas yog ntxiv cov khoom tiv thaiv dej. Cov plywood no feem ntau siv rau kev kho kom zoo nkauj sab nrauv.
• TVF-TV - ntau yam nplaim hluav taws plywood nrog nplaim hluav taws ntxiv.
• Laminated - Cov plywood no tau xyaum ua tsis tau zoo rau kev ua dej.

Los ntawm qib ntawm kev kho saum npoo av

Nyob ntawm tus txheej txheem ntawm kev kho saum npoo ntawm cov slabs, plywood yog:

• tsis txhuam;
• xuab zeb ntawm ib sab;
• xuab zeb ntawm ob sab.

Sanding ua rau saum npoo du, npaj rau txhua qhov ua tiav. Qhov no yooj yim heev thaum ua kev kho dua tshiab thiab ua haujlwm tiav, nrog rau thaum tsim cov rooj tog zaum. Qhov saum npoo ntawm lub vaj huam sib luag tuaj yeem kho nrog phenol-formaldehyde cob txheej. Cov txheej no ua rau saum npoo tawv dua thiab tiv taus hnav. Cov nplais ntawm cov nplais tuaj yeem ua tau ntxhib, perforated, txhuam, milled thiab raug rho tawm haujlwm.

Cov ntoo uas muaj muag tau muaj nyob rau hauv dawb, dub, xim lossis varnished. Qee cov laug cam tau npog nrog yas qhwv.

Rau lwm yam ntxwv

Plywood tau cais raws li nws lub hom phiaj ua haujlwm

• Aviation . Txhawm rau tsim cov ntaub ntawv zoo li no, cov veneer uas tuab tshaj plaws nrog ntu ntawm 0.4 mm. Tsuas yog cov ntoo zoo tshaj plaws tau xaiv. Cov plywood no yog qhov hnyav, tseem muaj lub zog siab tshaj plaws thiab ntom ntom. Nws tiv taus cov khoom puas. Aviation plywood yog xav tau rau aeromodelling thiab dav hlau cladding. Feem ntau, cov khoom siv tau ua hauv cov khoom me me los ntawm kev xaj khoom lag luam tub rog.
• Nkoj . Raws li lub npe qhia, cov khoom siv no tau siv hauv kev sib dhos ntawm cov qauv rau cov chaw ntab. Lub peculiarity ntawm cov plywood yog muaj nyob ntawm qhov tshwj xeeb impregnation, uas zoo heev ua rau nws cov dej tsis kam. Ib hom tshwj xeeb ntawm cov ntoo tauj kub tau siv rau cov khoom siv no. Feem ntau ntawm cov nkoj plywood ntawm kev tsim kho kev lag luam yog tsim tawm hauv Asmeskas, ntxiv rau hauv Israel thiab European Union. Cov tuam txhab lag luam hauv tsev tsis muaj cov ntaub ntawv tsim nyog rau kev pib ua cov khoom lag luam.
• Rooj tog . Hom plywood no muaj qhov zoo nkauj heev. Txawm li cas los xij, raws li nws lub cev thiab kev ntsuas tsis zoo, nws tsis zoo dua txhua lwm cov ntaub ntawv. Siv tshwj xeeb los tsim cov rooj tog hauv chav ua noj thiab chav dej hauv chav dej.
• Formwork . Cov khoom siv no yog qhov zoo tshaj plaws rau kev ua haujlwm ntxhib, piv txwv li, rau kev tsim qauv ua ntej qhov ntxhib pouring ntawm qhob. Cov yam ntxwv tshwj xeeb ntawm cov plywood yog txheej laminated - qhov no tshem tawm tag nrho cov so ntawm cov laug cam hauv qab dej. Thiab ntxiv rau, nws muab qhov yooj yim tshaj plaws kom tshem tawm ntawm cov tshuaj khib zeb ua kom tawv.
• Kev tsim kho . Cov khoom siv hauv tsev muaj zog heev siv rau kev teeb tsa lub ru tsev hloov pauv tau, phab ntsa thiab qab nthab. Cov ntawv tsim kho yog kim, yog li lawv muaj daim ntawv thov nqaim.
• Thauj . Cov ntaub ntawv zoo nkauj ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntw ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntab ntw ntab ntab ntab ntab ntw ntab ntab ntab ntab ntab ntab ntab ntw ntw ntw ntwav tsij thiab lub tswb nrov Cov ntawv no yog qhov txawv los ntawm txheej txheej tiv thaiv plam, lawv muaj qhov tshwj xeeb tshaj plaws tiv thaiv kom ya raws thiab nce lub zog. Lub thickness ntawm cov plywood no txawv ntawm 6.5 txog 27 hli. Thickened yog siv rau lub cev cladding. Cov khoom lag luam tuab tuab yog qhov zoo tshaj plaws rau kev tsim cov tsheb thauj khoom.
• Hniav . Qhov no yog tej zaum qhov txawv tshaj plaws hom varnished plywood. Nws zoo nkaus li zoo nkauj heev, muaj qhov ntxim nyiam nthuav dav thiab cov xim qub. Tshwj xeeb tshaj yog rau kev kho dua tshiab thiab ua tiav.

Ntau yam thiab hom

Muaj ntau ntau qib sib xws ntawm plywood

• FSF - cov khoom ua ke nrog phenol-formaldehyde cob nplaum Nws yog ruaj thiab tiv taus dej. Feem ntau siv hauv kev tsim kho kev lag luam.
• FC - ntawm no cov txheej txheem veneered tau lo nrog cov carbamide sib xyaw. Cov khoom siv no muaj qis dua me ntsis hygrostability, tab sis ntau dua raws li qhov xav tau ntawm kev phooj ywg ib puag ncig. Nws yog qhov cuam tshuam rau sab hauv cladding ntawm cov qauv thiab cov rooj tog tsim khoom.
• FB - plywood glued nrog bakelite resins. Lawv ua kom muaj zog khoov los ntawm 2-5 zaug, nce kev tiv thaiv ya raws los ntawm 60-70%, thiab muab qhov tshwj xeeb ntom ntom.
• FBS yog cov plywood uas ruaj tshaj plaws ua los siv cawv-soluble bakelite resins. Cov khoom tuaj yeem tiv taus kev sib cuag mus ntev txawm tias nrog dej ntsev, yog li ntawd, cov khoom ntawm lub nkoj ntawm cov khoom siv ntab tau tsim los ntawm nws.
• FBV - rau gluing veneer nplooj ntawv, dej-soluble resins tau siv ntawm no, yog li nws yog 15% tsawg dua cov dej tiv taus tshaj FBS.
• FBA - tsuas yog hom ntawm 100% ntuj plywood tsis muaj phenol. Hauv nws, veneer slabs tau glued ua ke nrog casein lossis albumin kua nplaum. Cov khoom siv no muaj kev nyab xeeb kiag rau tib neeg lub neej thiab kev noj qab haus huv. Muaj cov dej tsis kam tiv taus.

Kev faib tawm qib ntawm cov khoom siv yog nyob ntawm qhov zoo ntawm qhov chaw. Ntoo yog cov khoom siv uas muaj cov qauv sib txawv, tawg lossis tawg tau pom ntawm nws - thaum tev tawm, txhua qhov tsis xws no dhau mus rau lub veneer. GOST muaj cov npe ntawm txhua qhov ua tsis tau. Txhua hom muaj lawv tus kheej qhov ua tsis tau thiab lawv ntim. Qee qhov sib txawv raug tso cai.

Cov neeg tseem ceeb qib E:

• yuav tsum tsis muaj qhov tsis xws pom ntawm qhov saum npoo;
• ntawm cov ntaub ntawv coniferous, muaj nyob ntawm cov pob ib leeg raug tso cai;
• rau cov ntoo tawv yuav muaj qhov hloov pauv me me rau cov veneer.

Qib 1:

• pob qhov rooj / pob qhov rooj;
• ib qho kaw qhov tawg ntawm qhov me me;
• daj ntseg tawm;
• ntuj hloov hauv ntxoov ntxoo;
• me ntsis veneer khoob nyob rau sab hauv txheej;
• xaus qhov tsis xws luag.

Qib 2:

• pob caus / wormholes;
• ib qho tawg;
• noob qoob loo;
• hnab yas;
• sib tshooj veneer ntawm txheej txheej;
• kab noj hniav;
• khawb;
• lo kua nplaum.

Qib 3: rau ntau yam no tib yam tsis xws luag yog qhov zoo rau ntau yam 2, tab sis nyob hauv qhov ntau me ntsis.

Qib 4: rau plywood no, feem ntau ntawm cov kev txwv tau raug tshem tawm. Qhov no yog cov khoom siv thev naus laus zis, cov tseev kom muaj tsawg rau nws los tswj cov yam ntxwv khoom siv. Hom plywood no feem ntau yog siv rau kev muaj tswv yim - ua qauv thiab hlawv.

Qhov ntev (kho kom raug)

Plywood tuaj yeem tsim ua ntau qhov ntau thiab tsawg, raws li lawv tau muab faib ua cov qauv thiab tsis yog tus qauv. Cov qub tau tswj hwm los ntawm GOST 3916.1-96, tom kawg tau tsim tawm hauv qhov tsawg ntawm kev xaj rau kev lag luam loj. Raws li txoj cai, cov ntawv tau ua cov duab plaub, tsawg dua lawv nyob hauv daim ntawv ntawm ib lub xwmfab. Nyob ntawm qhov ntev, plywood tuaj yeem yog hom ntawv me thiab hom loj.

Qhov ntau thiab tsawg ntawm cov qauv me me slabs suav nrog:

• 1220x1220 hli;
• 1525x1220 hli;
• 1525x1525 hli.

Koj tuaj yeem ua haujlwm nrog cov ntawv no ib leeg, tsis muaj tus pab. Txawm li cas los xij, thaum tsau rau saum npoo av, muaj ntau txheej txheej pom tau. Tias yog vim li cas, hauv qee kis, qhov kev daws teeb meem zoo tshaj plaws yog siv cov ntawv loj.

Cov khoom lag luam loj tau tsim hauv ntau qhov ntau thiab tsawg:

• 1830x1525 hli;
• 3050x1525 hli
• 3000x1500 hli;
• 2500x1250 hli;
• 2440x1220 hli.

Raws li rau qhov tuab, ntawm no koj tuaj yeem pom cov khoom siv hauv qhov ntau thiab tsawg los ntawm 1 txog 40 hli. Qee cov tuam ntxhab ua cov qauv tuab dua. Qhov nrov tshaj plaws yog cov phaj nrog tuab ntawm 6-27 hli.

Cov Lus Qhia Xaiv

Cov khoom lag luam zoo tuaj yeem tsuas yog txheeb xyuas nrog kev tshuaj xyuas ze. Qhov zoo ntawm plywood tuaj yeem qhia ntau yam txog kev ua tau zoo ntawm cov khoom . Nco ntsoov saib ntawm ntug ntawm daim ntawv, xyuas yog tias txheej tau ua tib zoo lo. Saib seb cov hlais yog xim dab tsi. Piv txwv li, kev hloov pauv ntawm cov xim kab txaij qhia txog kev sib xyaw ntawm cov ntoo txiav ntoo thiab cov ntoo sib txawv. Lub teeb ib qho qhia txog kev siv cov ntoo txiav ntoo, thiab qhov tsaus ntuj - rau ntoo coniferous.

Ntau lub tuam txhab tsis tsim txiaj qee zaum sim dag cov neeg siv khoom . - lawv tsuas yog cov nplaum sab nrauv ntawm lub vaj huam sib luag nrog cov veneer zoo. Hauv qhov no, cov txheej txheem ua haujlwm tsis hloov pauv, tsuas yog cov plywood zoo nkaus li zoo dua. Cov ntaub ntawv zoo li no tsuas tuaj yeem siv rau kev ua tiav cov txheej txheem. Tab sis rau kev sib dhos ntawm rooj tog thiab lwm yam haujlwm hnyav, nws tsis tsim nyog.

Cov ntoo tsis xws luag muaj xws li:

• pinned los yog poob tawm cov pob caus ntawd;
• kab nrib pleb;
• ntse shading zaus;
• khawb;
• kab noj hniav;
• bulges;
• delamination ntawm fibers;
• Ntoo "thaj ua rau thaj";
• lub xub ntiag ntawm rot;
• kua nplaum rau ntawm ntug.

Muaj ntau qhov tsis xws luag qhia tias cov chaw tsim khoom tau txuag ntawm cov ntaub ntawv raw, ua txhaum cov txheej txheem khaws cia thiab thauj cov khoom lag luam, lossis tsis quav ntsej cov qauv txheej txheem txheej txheem. Xws li plywood yuav luv luv.

Daim ntawv thov

Thaum siv cov ntawv plywood, nws yog qhov tsim nyog yuav tsum nco ntsoov qee qhov subtleties ntawm nws daim ntawv thov. Muab cov khoom tiaj tiaj tso rau hauv cov dav hlau sib dhos ua ke, koj tuaj yeem ua tiav lub zog siab tshaj plaws ntawm cov khoom . Qhov tseem ceeb yog txhawm rau faib cov khoom thauj mus rau qhov chaw kom raug thiab ua kom ntseeg tau tias kev txhim kho ntawm lub roob. Nws yog qhov nyuaj uas cov ntsia hlau nkag rau hauv plywood; lawv tsis tuav thaum kawg txhua. Lawv tsuas yog siv ua dowels - lawv tau tsav mus rau qhov ua ntej qhov drilled qhov. Cov tshuaj no tau siv nyob rau hauv kev txiav shear, txij li lawv muaj kev tiv thaiv me ntsis los rub tawm.

Cov ntsia hlau thiab tus kheej tapping screws tiv thaiv rub tawm zoo . Txawm li cas los xij, ua ntej drilling feem ntau yuav tsum tau teeb tsa lawv. Nco ntsoov tias veneer kua muag thiab daim tawv nqaij feem ntau tshwm sim thaum lub sijhawm ua haujlwm no.

Txhawm rau kom tau txais kev huv, txawm tias txiav yam tsis ua rau cov khoom puas, tsuas yog siv cov hniav txhuam hniav zoo lossis txiav laser tuaj yeem siv. Ib txoj siv tawv siv rau kev sib tsoo, kev txav mus los tau ua raws ntug.

Plywood yog ib yam ntawm cov rooj tog thiab cov khoom siv hauv tsev uas ua los ntawm cov ntoo pov tseg . Koj yuav tsum tsis txhob cia siab tias los ntawm kev yuav khoom plywood, koj yuav tau txais ntau yam khoom siv raw uas tso cai rau koj los tsim cov qauv muaj zog thiab zoo nkauj uas tsis qis dua qhov ntom ntom mus rau Lebanese cedar. Tab sis yog tias koj siv plywood raws nruj raws li cov chaw tsim khoom pom zoo, tom qab ntawv cov khoom no yuav pab koj tau ntau xyoo lawm.