Nyob rau xyoo tas los no, kev txhim kho tsis muaj zog ntawm cov tuam tsev ntsuab tau ua qhov kev xav tau ntawm kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob ntawm cov khoom siv hauv tsev, thiab cov qauv ib txwm muaj ntawm kev ua lag luam khoom siv hauv tsev tseem hloov pauv hloov. Qhov ua tiav zoo thiab hloov kho dua tshiab ntawm kev ua lag luam ru tsev pob zeb ua ke yog sib cais ntawm kev hloov pauv. Ntawm lawv," khoom tswv yim tshiab" tau dhau los ua qhov tseem ceeb tsav ntawm kev hloov kho tshiab. Cov nplais tsim los ntawm PVC vov tsev cov khoom siv vuas vov tsev yog qhov tseem ceeb ua tiav ntawm cov khoom tsim tshiab. Nws muaj ntau qhov zoo, xws li tiv thaiv xeb thiab huab cua tsis kam, tiv thaiv cua thiab av qeeg, tiv thaiv kub thiab rwb thaiv tsev, tiv thaiv hluav taws thiab tiv thaiv hluav taws, kev pab lub neej ntev, tsis tas yuav rov ua dua tshiab thiab tu thaum nws siv, uas tau pom zoo los ntawm lub xeev raws li Kev tiv thaiv ib puag ncig thiab lub zog txuag hluav taws xob cov ntaub ntawv tau siv dav.
Cov khoom siv pobzeb tsim los ntawm PVC vov vuas cov khoom siv nrog kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob muaj qhov chaw loj hlob: thawj, kev lag luam muaj kev txhim kho mus sij hawm ntev, thiab kev thov rau cov phiaj xwm xws li tiaj rau nqes hav, kev hloov kho hauv av, thiab kev tsim kho tshiab hauv nroog loj; qhov thib ob, lub zog thiab kev hloov pauv hloov ntawm cov pobzeb lag luam feem ntau tsim cov khoom siv PVC ru tsev pobzeb nyob rau hauv kev lag luam tau ua tiav zoo kawg li ntawm kev ua lag luam, thiab cov kev lag luam niaj hnub tau tsim tau yooj yim; qhov thib peb theem kev qib kev lag luam yog kev paub tab, ze rau lub ntiaj teb' s qib siab, thiab qee qhov chaw tau nce mus txog qib siab thoob ntiaj teb; Plaub, cov thim rov qab PVC vov vuas cov khoom tsim cov nplais lag luam." tawm mus", hauv kev lag luam thoob ntiaj teb los qhia qhov muaj zog ntawm Tuam Tshoj' s tshiab vuas vov tsev, thiab coj" mus tawm" ntawm Suav cov qauv, kev ua haujlwm thiab ua tiav cov khoom siv, thiab ua tiav cov txiaj ntsig zoo txhua yam. Kev txhawb nqa kev txhim kho ntawm kev tiv thaiv ib puag ncig thiab lub zog txuag hluav taws xob cov ntaub ntawv yog lub hom phiaj kev tsim lub tsev ntsuab. Tom qab ntau tshaj kaum lossis nees nkaum xyoo ntawm kev cai raus dej, cov ntaub ntawv tsoos pob zeb yuav dhau los ua kev tsim kho, ua rau muaj kuab paug ntau.
Cov pobzeb tsim los ntawm cov khoom siv vov PVC pobzeb tsis tuaj yeem pov tseg cov peev txheej hauv av tabsis tseem ua tau zoo rov ua haujlwm. Ntxiv rau ntau cov cwj pwm kev ua tau zoo, nws tau dav siv nyob rau hauv txoj kab nqes tiaj tus, kev ua nroog tshiab, kev tsim kho tshiab hauv nroog, txhim kho shantytown thiab lwm cov dej num. Txhua lub tsev cov khoom lag luam uas tsis ua raws li lub tswv yim ntawm kev tiv thaiv ib puag ncig ntsuab yuav raug tshem tawm, thiab cov ntaub ntawv tshiab lub tsev uas ua raws lub sijhawm thiab kev txhim kho kev lag luam yuav ua rau muaj cov hauv kev tsim kho tshiab. Cov vuas tsim los ntawm PVC cov vuas vov cov khoom siv pob zeb yuav txhawb kev lag luam cov vuas vov tsev nkag mus rau tshooj tshiab hauv kev txhim kho kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob.
