Leej twg yog cellulose etherers?

Kev txhawj xeeb Chemistry yog kom ntseeg tau cellulose ether cov cellule cov tshuaj etherylropeny thiab muaj kev lag luam celluely ether Lub Hoobkas, nrog lub vaj muaj peev xwm 27000ton / xyoo.

Lub Hoobkas nyob 68000㎡.

Cellulose Ether cov txheej txheem ntau lawm

Siv cov paj rwb reeped nrog sodium hydroxide nyob rau hauv qee yam kev mob epoxes, rov qab los ntawm qee yam ntawm cov khoom siv epoxulose, kev ntxuav tawm, ntxuav, kom qhuav thiab crushing ntawm cov khoom hmoov; Vim tias qhov sib txawv ntawm qhov chaw sawv cev, lub hauv paus yog qhov sib txawv ntawm cov kab mob ether tas,

Cellulose ether

Lub polymer sib txuas nrog cov qauv ether tuaj ua los ntawm cellulose. Nws yog cov khoom lag luam ntawm cov tshuaj tiv thaiv ntawm cellulose (cov nroj tsuag) nrog tus neeg sawv cev. Raws li cov qauv tshuaj cais tawm ntawm cov neeg tuaj hloov chaw tuaj lwm tus, tuaj yeem faib ua anionic, cationic muaj kev tsim txom. Vim hais tias ntawm cov neeg sawv cev sib txawv siv, muaj cov metyl cellulose, cellulhoyl cellulose, cellulropyl hydrotyl hydulose, cellulropyl hydulose, cellulropyl hydulose, cellulropyl hydulose thiab cov ntaub ntawv phenyloos thiab phenyl cellulose. Hauv kev tsim kho kev tsim kho, ether ether yog tseem hu ua cellulose, yog lub npe tsis yog ntawm cellulose (lossis ether).

Thickening txheej ntawm cellulose ether tuab

Cellulose ether thickener tsis yog-ionic thickener, feem ntau yog los ntawm kev haus dej thiab cua ntawm cov lwg me me kom tuab.

Cellulose ether polymer saw yog yooj yim los tsim cov dej hydrogen nrog cov dej hauv dej, hydrogen kev ua kom nws muaj cov hydration thiab intermolecular lawm.

Thaum nws cov tuab ntawm tes ether ntxiv rau cov xim looj, nqus dej ntau ntxiv, txo cov haujlwm pub dawb ntawm yan filler thiab cov kua txiv.

Nyob rau tib lub sijhawm, cellulose ither molecular charts yog intertensed los ua ib qho kev sib tw nrog cov qauv sib tw thiab cov kua txiv ntoo yog ib puag ncig hauv nruab nrab ntawm lub mesh, thiab tsis tuaj yeem ntws dawb.

Raws li cov ob qho kev ua, lub viscosity ntawm cov txheej txheem raug txhim kho! Ntawd yog cov tuab npaum li peb xav tau!

Cov cellulose tib yam (Etaws):

Lub cellulose uas hais txog ntawm kev ua lag luam feem ntau yog hais txog hydroxyl prantl, hydrox xim metyllose yog siv hauv cellulose yog siv nyob rau hauv colpure Carboxymethyl cellulose yog siv rau sab hauv phab ntsa sab hauv cov hmoov putty.

HydroxyPropylropy Cellulose (HPMC)

HydroxyPropyyl methylcellose (HPMC) yog ib hom kua ntxhiab tsw, muaj ob yam kua tsis muaj cov kua dawb, nws muaj ob qho kev tsim tawm, qhov tsim ntawm pob tshab viscous colloid. Cov qauv insoluble: tuaj yeem siv nyob rau hauv bored nrog tus menyuam hmoov thiab xis mos tos rau cov khoom siv qhuav thiab siv tsis taus, tuaj yeem tshwm sim tuav ua ke tshwm sim ua ke.

Lub cev thiab tshuaj lom neeg

Zog: dawb los yog yuav luag cov hmoov dawb dawb, tsw ntxhiab tsw thiab tsis xis. Qhov loj me me: 100 Mesh Pass tus nqi yog ntau dua 98.5%; Tus lej dhau ntawm 80 mesh yog ntau tshaj 100%. Carbonyim kub: 280-300 ℃. Pom meej ntom: 0.25-0.70g / (feem ntau yog li 0.5g / m2), kev sib tsoo yog 1.26-1.31. Xim hloov qhov kub: 190-200 ℃. Cov nro: 42-56dyn / cm rau 20% kev daws teeb meem. Solubility: soluble hauv dej thiab qee cov kuab tshuaj organic, xws li muaj cov dej num muaj zog ntawm ethanol / dej, DIHTOY ROJ UA HAUJ LWM Txawv cov lus tshwj xeeb ntawm cov khoom gel kub yog txawv, qhov no yog lub thermal gel cov khoom ntawm HPMC. Solubility hloov nrog viscosity, qhov qis dua rau solubility, ntau dua cov solubility, HPMC nyob rau hauv kev daws teeb meem tsis cuam tshuam los ntawm PH tus nqi. Nrog rau qhov tsawg me ntawm methoxyl cov ntsiab lus nce, cov dej solubility txo qis, thiab cov dej num saum npoo av kuj poob. HPMC kuj tau ua kom muaj peev xwm txo qis, cov ntsev txo qis, sib zog ua kom muaj zog, kev tawm tsam zoo, kev tawm tsam zoo heev, kev tawm tsam thiab cov yam ntxwv sib txawv.

HydroxyPropylropy Cellulose muaj nuj nqi:

Tuaj yeem ua rau cov tshuaj khib tshiab kom tuab kom muaj qee yam ntub dej viscosity, tiv thaiv cais. Dej khaws cia (thickening) kuj yog cov khoom tseem ceeb tshaj plaws, yog li muab cov khoom siv dawb rau cov khoom siv dej qab zib ntau dua rau cov tshuaj khib. (Dej khaws cia) nws tus kheej huab cua, tuaj yeem qhia cov khaub ncaws

Cov npuas me me, txhim kho kev tsim kho ntawm cug.

Qhov zoo ntawm hydroxypropyl methylropyl cellulose hauv thaj teb cov ntaub ntawv

Performance:

Yooj yim sib xyaw nrog cov hmoov kom qhuav mis. Nws muaj cov yam ntxwv ntawm cov dej txias dispersion. Yog li ntawd cov khoom muaj txiaj ntsig zoo tau ncua, kom cov sib tov zoo dua thiab du.

Nws:

Qhuav muab cov qauv ua tiav uas muaj cellulose ether tuaj yeem sib xyaw nrog dej yooj yim. Tau txais cov yam xav tau sai sai. Cellulose ether dissolves ntau nrawm dua thiab tsis muaj koog.

Kev Tsim Kho:

Txhim kho cov roj yuag thiab cov yas siv rau txhim kho kev ua haujlwm ua haujlwm thiab ua rau cov khoom lag luam kom yooj yim dua thiab nrawm. Txhim khu cov dej khaws cia thiab txuas ntxiv lub sijhawm ua haujlwm. Pab tiv thaiv kev ntsug ntsug tshuaj khib, tshuaj khib thiab pobzeb. Lub sijhawm ntev ua kom lub sijhawm txias, txhim kho kev ua haujlwm efficiency. Txhim kho lub zog uas muaj zog ntawm cov pobzeb pobzeb nplaum. Txhim khu cov shrinkage tawg thiab tawg lub zog ntawm cug thiab phaj sealant. Txhim kho cov ntsiab cua cov ntsiab lus hauv tshuaj khib nyiab heev txo qhov kev tawg tau. Tuaj yeem txhim kho pob zeb nplaum nplaum ntsug ntsug tsis kam.

Daim Ntawv Thov ntawm Hydroxypropy Cellulose hauv kev tsim teb

Dej tsis kam Putty rau sab hauv thiab sab nraud phab ntsa:

Cov dej zoo heev, tuaj yeem txuas lub sijhawm tsim kho thiab txhim kho kev ua haujlwm tau zoo. Covricity siab ua rau kev siv tau yooj yim thiab smoother. Muab ib tug du thiab txawm tias kev ntxhib los mos rau cov putty du putty. Siab viscosity, feem ntau nyob rau hauv 10 ~ 150 txhiab lo, ua bored nrog aggluthation txiv neej nrog mastope muaj zog. Txhim kho cov shrinkage tsis kam thiab tawg tsis kam, txhim kho qhov chaw zoo. Kev siv tshuaj Dosage: Sab hauv phab ntsa 0.3-0.4%; Phab ntsa sab nrauv 0.4 ~ 0.5%;

Sab nrauv phab ntsa Rwb thaiv tsev

Txhim kho cov nplaum nrog phab ntsa saum npoo av, thiab tuaj yeem txhim kho cov dej khaws cia, yog li ntawd lub zog ntawm cug cug yuav raug txhim kho. Txhim kho lubricity thiab plasticity txhim kho kev ua haujlwm, sib xyaw nrog shenglu neeg cug, yooj yim los tsim kho lub sijhawm thiab txhim kho tus nqi ua kom zoo. Kev tswj cov kev nkag rau cov cua nkag mus tshem tawm cov micro-cov kab nrib pleb hauv txheej txheej, ua rau muaj qhov zoo tshaj plaws du nto.

Machinery plastering thiab gypsum plaster cov khoom lag luam

Txhim kho cov kev coj ua ke, ua rau plastering yooj yim mus kis, txhim kho cov ntsug kev ntws tsis kam thiab

Txhim kho cov fwstrity thiab cov tsis muaj zog. Yog li txhim kho kev ua haujlwm efficiency. Dej siab khaws cia, ntev ntev lub sij hawm ua tshuaj khib, thiab tsim cov tshuab muaj zog thaum lub sijhawm sandicification thaum sandicification. Los ntawm kev tswj cov kev sib xyaw ntawm cov kev sib xyaw ntawm cov xwm txheej sib xws, zoo zoo sab nraud txheej yog tsim.

MAAs-Raws Plastering Thiab Masonry Cug

Txhim kho homogeneity, ua rwb thaiv kev pov tseg kom yooj yim dua rau txheej, thiab txhim kho cov anti-vertical muaj peev xwm. Dej siab khaws cia, tau ntev ntev lub sij hawm cug, txhim kho kev ua haujlwm zoo, thiab kev kho cug ua haujlwm hear txhua yam muaj zog thaum lub sijhawm sib zog. Nrog dej tshwj xeeb khaws cia, ntau dua haum rau kev nqus dej siab.

Phaj Sib Koom Tes

Cov dej zoo heev, tuaj yeem ua kom lub sijhawm txias thiab txhim kho kev ua haujlwm tau zoo. Covricity siab ua rau kev siv tau yooj yim thiab smoother. Txhim kho cov shrinkage tsis kam thiab tawg tsis kam, txhim kho qhov chaw zoo. Muab ib tug du thiab txawm tias kev ntxhib los mos, thiab ua rau kev sib koom tes sib txuas ntau cohesive.

Ceramic Pobzeb Adhesive

Ua kom cov khoom xyaw qhuav yooj yim sib xyaw, tsis tsim cov lumps, yog li txuag lub sijhawm ua haujlwm. Thiab ua kev tsim kho sai dua thiab siv tau zoo dua, tuaj yeem txhim kho kev tsim kho, thiab txo tus nqi. Los ntawm lub sijhawm ntev lub sijhawm txias, kev ua tau zoo ntawm cov cib pased yog txhim kho. Muab cov khoom nplaum zoo rau cov nyhuv loj nrog cov ntaub ntawv siab tsis kam.

Cov khoom siv hauv siab

Muab cov viscosity thiab tuaj yeem siv ua kev tiv thaiv nag lossis daus. Nce fundity thiab puckability los txhim kho kev ua haujlwm ntawm kev ua haujlwm hauv pem teb. Tswj dej khaws cia, yog li muaj kev txo qis tawg thiab shrinkage.

Dej ua xim pleev xim thiab pleev xim

Lub neej khaws cia yog txuas los ntawm kev tiv thaiv cov khib nyiab los ntawm kev tswm. Nws muaj qhov sib txuam zoo heev nrog lwm cov khoom thiab kev ruaj khov siab biological stability. Kev sib cais sai sai uas tsis muaj clumping pab ua kom yooj yim cov txheej txheem sib xyaw. Ua cov lus txaus siab, suav nrog kev sib tw tsis txaus thiab ua kom zoo nkauj, uas ua kom pom tseeb zoo nkauj thiab txwv tsis pub pleev xim thiab tiv thaiv kom ntws. Txhim kho cov viscance ntawm dej-raws li cov xim pleev xim rau thiab organic kuab pleev xim tshem tawm, kom cov xim remover yuav tsis ntws tawm ntawm qhov chaw ua haujlwm.

Extruded qhob daim ntawv

Txhim kho cov tshuab luam ntawv ntawm cov khoom seem, nrog kev sib raug zoo siab thiab lubricity. Txhim kho lub zog ntub thiab cov nplaum ntawm daim ntawv tom qab extrusion.

Ntim, khaws cia thiab tsheb thauj mus los uas xav tau kev mloog

Packing: Yas Txheej Polypropylene Woven Hnab, Net Qhov Nyhav Ntawm Txhua Lub Hnab: 25Kg. Hauv cov txheej txheem cia thiab tsheb thauj mus los tiv thaiv hnub thiab nag thiab noo noo.

Carboxymethyl cellulose, tseem hu ua Sodium Carboxymethyl cellulose, xa mus rau CMC:

Carboxymethyl cellulose (CMC) yog Nontoxic thiab cov mov dawb froc hmoov nrog kev ua haujlwm ruaj khov thiab kev yooj yim solubility hauv dej. Nws cov kua aqueous yog qhov nruab nrab lossis alkaline pob tshab viscesives, soluble kua nplaum thiab resins nyob rau hauv ethanol thiab lwm yam kuab tshuaj organic.

CMC tuaj yeem siv tau raws li nplaum, cov neeg sawv cev tuab, emulsifit, cov khoom lag luam stabulier, feem ntau yog cov khoom lag luam cellule, feem ntau yog hu ua "Industrial Moos Glutamate". Carboxymethyl cellulose muaj cov haujlwm ntawm adhesion, thickening, txhim kho, emulsification, dej rov qab thiab raug ncua.

Sodium CarbiSylethyl cellulose hauv kev lag luam kev lag luam: socing stabiymethyl cellulose, thiab muaj peev xwm txhim kho qhov tsw zoo, thiab muaj peev xwm txhim kho cov khoom noj khoom haus Sodium Carboxymethyl cellulose hauv kev lag luam tshuaj siv: hauv kev lag luam tshuaj tuaj yeem siv tau ua tshuaj txhaj tshuaj CMC tuaj yeem siv tau los ntawm txheej los tiv thaiv tus neeg sawv cev, ua rau cov txheej txheem me me, tab sis hais tias cov txheej txheem me me, tab sis kuj tseem muaj ntau cov ntawv thov hauv cov xim. Sodium Carboxymethyl cellulose tuaj yeem siv los ua cov tshuaj lom neeg, tawv nqaij, ua kom zoo nkauj, ua yeeb yaj kiab tas li, kev cia siab rau cov lag luam tshiab, kev ua lag luam kev cia siab yog qhov dav dav.

Cov Qauv Thov:

Phab Ntsa Sab Nraud Phab Ntsa Putty F hmoov Cov hmoov mis hauv phab ntsa Putty

Shuangfei Hmoov: 600-650kg 1 Shuangfei Hmoov: 1000KKG 3 CMC: 10-15Kg CMC: 10-15Kg lossis HPMC2.5-3kg

Cov khoom ntawm cov hmoov putty tom qab ntxiv cov roj carboxymethyl cellulose cmc thiab ua ntej-gelatinized starch:

Muaj kev muaj peev xwm zoo. Cov cuab yeej nplaum, tib lub sijhawm muaj qee yam dej khaws cia; Txhim kho cov kev tawm tsam cov khoom siv tawm tsam ntawm cov khoom siv (ntws dai), txhim kho kev ua haujlwm ntawm cov khoom, ua rau lub zog ua kom zoo dua; Ntev lub sijhawm qhib ntawm cov ntaub ntawv. Qhuav tom qab nto yog tus, tsis txhob hle cov hmoov, zaj duab xis ua kom zoo, tsis muaj khawb. Qhov tseem ceeb tshaj, cov tshuaj tseem ceeb, cov nyiaj tsawg, tsawg heev ntawm ntxiv tuaj yeem ua tiav qhov kev cuam tshuam loj; Nyob rau tib lub sijhawm, tus nqi ntau lawm tuaj yeem txo los ntawm kwv yees li 10 ~ 20%.

CMC siv nyob rau hauv kev tsim kho kev tsim kho hauv kev tsim cov qhob kev tsim kho thiab tuaj yeem txhim kho lub zog ua ntej, tab sis kuj tseem pab txhawb qhov chaw prefabricated, thiab tseem pab txhawb qhov prefabricated qhov chaw poob tawm ntawm zaj duab xis. Lwm qhov tseem ceeb yog phab ntsa scraping dawb thiab putty hmoov, muab khaws cia cov khoom siv hauv tsev, yog li ntawd lub ntsa loog txhim kho txheej thiab ci.

Hydroxyethy cellulose (HEC):

Hydroxyethyl cellulose (HEC) yog qhov tsis-ionic cellulose ether tau los ntawm kev ua cov tshuaj polymer cov khoom siv. Nws yog qhov tsis muaj ntxhiab, cov tsis tau muaj hmoov dawb lossis cov hmoov av uas muaj peev xwm tshem tawm hauv cov dej txias uas tsis cuam tshuam los ntawm Ph. Nrog cov thickening, adhesion, kev faib tawm, kev tsim duab, kev sau yeeb yaj kiab, kev ua si sab nrauv, noo noo khaws thiab ntsev tsis kam, thiab lwm yam.

Hydroxyethyl cellulose muaj qhov zoo ntawm cov nyhuv tuab

Hydroxyethyl cellulose muab cov khoom siv xim zoo zoo rau cov ntsiab lus looj, tshwj xeeb tshaj yog rau cov xim PVA txheej. Thaum txheej txheej tuab, flocculation yuav tsis tshwm sim. Hydroxyethyl cellulose muaj cov nyhuv tuab dua. Nws tuaj yeem txo cov kev siv tshuaj, txhim kho kev lag luam ntawm cov mis, thiab txhim kho cov tshuaj ntxuav tsis kam ntawm cov txheej.

Cov Khoom Taw Qhia Zoo Li Qub

Hydroxyethyl cellulose aqueous kua aqueous kua aqueous kua txiv yog tsis yog-Newtonian system, thiab cov khoom ntawm nws cov kev daws teeb meem yog hu ua thixotrotropy. Thaum so, tom qab cov khoom yog yaj tag, lub txheej txheej txheej tseem nyob hauv nws qhov kev zoo tshaj plaws thiab canning lub xeev. Hauv lub xeev pov tseg, lub kaw lus tswj tau ib pawg viscirecosity, ua rau muaj kev zoo nkauj thiab tsis muaj kev sib cais. Thaum lub sij hawm txhuam hniav thiab cov menyuam cov txheej, cov khoom yog yooj yim mus sib kis ntawm lub substrate. Kev tsim kho yooj yim. Nyob rau tib lub sijhawm, nrog zoo txaws tsis kam. Thaum kawg, thaum txheej txheej tiav lawm, lub viscosity ntawm lub system tau rov qab tam sim ntawd, thiab cov txheej tam sim ntawd ua kom ntws.

Kev faib tawm thiab solubility

Hydroxyethyl cellulose yog kho nrog ncua kev sib cais, uas tuaj yeem tiv thaiv kom zoo thaum cov hmoov qhuav ntxiv. Thaum hec hmoov yog tag nrho dispersed, hydration pib. Hydroxyethyl cellulose nrog kom tsim kho kom zoo tau kho tau zoo thiab viscosity sawv tus nqi ntawm cov khoom.

Kev tso khoom ruaj khov

Hydroxyethyl cellulose muaj cov tshuaj tiv thaiv zoo thiab muab cov txheej muaj cov txheej muaj teeb meem txaus. Ua tau zoo tiv thaiv cov xim thiab cov kev sib hais haum.

Siv Txuj Ci:

Txoj kev no yog qhov yooj yim thiab luv tshaj plaws kom tau ntxiv ncaj qha rau hauv kev tsim khoom. Cov kauj ruam yog raws li hauv qab no:

Ntxiv cov dej lim hauv VAT nrog qhov siab - txiav agitator. Pib nplawm ntawm qhov ceev qis thiab maj mam sieve lub hydroxyethyl cellulose rau hauv kev daws. Ua txuas ntxiv kom txog thaum txhua qhov me me soggy. Tom qab ntawd ntxiv cov mildew inhibitor, ntau yam ntxiv. Xws li cov xim, dispersant additives, ammonia thiab li ntawd. Do kom txog thaum txhua hydroxyethyl cellulose yog rhuav tshem tawm (lub viscosity ntawm cov kev daws teeb meem nce ntxiv) ua ntej ntxiv lwm yam ntawm cov mis rau cov tshuaj tiv thaiv.

Nrog niam ua kua tos: Cov qauv no yog thawj zaug nruab nrog cov niam txiv siab ntau dua, thiab tom qab ntawd ntxiv rau cov khoom. Qhov zoo dua ntawm hom no yog tias nws muaj peev xwm ntxiv tau ncaj qha ntxiv rau cov khoom tiav, tab sis nws yuav tsum khaws cia kom zoo.

Cov kauj ruam yog zoo ib yam li cov kauj ruam 1-4 hauv txoj kev 1: Qhov sib txawv yog tias tsis muaj ib qho kev ntxhov siab kom muaj mob hydrot. Nco ntsoov tias tus neeg inhibitor yuav tsum tau ntxiv rau niam cawv niam hmo kom sai li sai tau.

kev siv

Raws li kev tiv thaiv kev tiv thaiv, HEC tuaj yeem siv rau Vinyl acetate emulsion polulsion los txhim kho kev ruaj khov ntawm polymerization system nyob rau hauv ntau cov xovtooj dav. Cov tshuaj ntxiv xws li cov pigments thiab fillers yog siv hauv kev tsim cov khoom lag luam tiav rau disperse tusyees, ruaj khov thiab muab cov tuab. Nws kuj tseem siv tau rau cov styrene, acrylic, acrylic thiab lwm cov neeg raug ncua ntawm cov dispersants. Siv nyob rau hauv looj cov xim av tuaj yeem txhim kho cov tuab thiab ua tau zoo. Roj Drilling: HEC yog siv los ua cov tuab nyob hauv ntau yam ntawm cov av nkos yuav tsum muaj rau kev tho kom haum kom ua tiav fluent fluidity thiab ruaj khov. Txhim kho cov av nkos thaum lub sijhawm khiav dej thiab kev tiv thaiv ntawm cov dej loj los ntawm av nkos mus rau hauv lub pas dej ntau lawm ntawm lub pas dej. Siv hauv kev tsim kho vaj tse thiab tsev tsim nyog: vim tias nws muaj zog kav dej ruaj khov, HEC yog cov tuab tuab thiab zoo nkauj rau Maas Slurry thiab tshuaj khib. Sib tov nws mus rau hauv kev sib xyaw tuaj yeem txhim kho flu fluidity thiab kev tsim kho kev ua haujlwm, thiab tuaj yeem txhim kho lub zog ntev ntawm pob zeb ua thiab tsis txhob tawg. Siv rau plastering gypsum, byping gypsum, gypsum putty tuaj yeem txhim kho nws cov dej khaws cia thiab ua kom muaj zog. Siv rau hauv cov tshuaj txhuam hniav: vim tias nws cov ntsev muaj zog thiab acid tsis kam, HEC tuaj yeem ua kom cov tshuaj txhuam hniav tau ruaj khov. Ntxiv rau,

Vim hais tias cov dej cia thiab ua kom cov tshuaj txhuam hniav tsis yooj yim kom qhuav. Siv nyob rau hauv cov kua mis-based number case, HEC tuaj yeem ua rau lub kua muag qhuav qhuav thiab impminable. Ib qho ntxiv, HEC tseem muaj dav siv rau hauv textile luam ntawv thiab dyeing, ntawv ua, tshuaj lom neeg txhua hnub thiab lwm yam.

Kev txiav txim siab rau kev siv HEC

Hygroscopicity: txhua hom ntawm hydroxyethyl cellulose hec muaj hygroscopicity. Cov ntsiab lus noo noo feem ntau qis dua 5% thaum tawm hauv lub Hoobkas, tab sis muaj kev sib txuas lus sib txawv, cov ntsiab lus noo yuav siab dua thaum tawm ntawm lub Hoobkas. Tsuav cov dej cov ntsiab lus yog ntsuas thaum siv thiab qhov hnyav ntawm cov dej yog txiav tawm thaum xam, nws yuav tsum tsis raug rau cov cua. Hmoov hmoov

Cov Specification: Cov khoom lag luam yog tsim los ntawm cov ntawv yas cov kab sib txuas nrog polyethylene sab hauv lub hnab, net hnyav 25 kg. Khaws nws sab hauv tsev hauv qhov chaw qhuav thiab muaj qhov cua. Them sai sai rau nag thiab hnub tiv thaiv thaum thauj mus los.