Cov nplai ntses asphalt shinglesyog ib qho ntawm cov khoom kub tshaj plaws hauv kev lag luam ru tsev. Tsis yog tsuas yog cov shingles no zoo nkauj xwb, tab sis lawv kuj ruaj khov thiab siv tau ntau yam, ua rau lawv yog qhov kev xaiv zoo rau cov qauv ru tsev ntsuab niaj hnub. Tsim nyob rau hauv Tianjin Xingang, cov shingles no tuaj ua ke ntawm 21 shingles, npog kwv yees li 3.1 square meters. Lub peev xwm tsim khoom ntawm cov shingles no yog qhov zoo kawg nkaus, nrog lub peev xwm ntawm 30,000,000 square meters ib xyoos, kom ntseeg tau tias muaj kev muab khoom txaus los ua kom tau raws li qhov kev thov loj hlob rau cov kev daws teeb meem ru tsev ruaj khov.

Cov shingle asphalt uas ua los ntawm cov nplai ntses yog tsim los ua kom zoo nkauj rau cov ru tsev ntsuab thaum tseem muab kev tiv thaiv tseem ceeb los ntawm dej thiab huab cua. Lawv cov duab thiab cov qauv tshwj xeeb ntxiv kev kos duab rau txhua lub tsev, ua rau lawv yog qhov kev xaiv nrov rau cov kws kes duab vajtse uas tab tom nrhiav kev tsim cov qauv zoo nkauj thiab zoo rau ib puag ncig. Tsis tas li ntawd, cov shingle no muaj cov nqe lus them nqi yooj ywm, suav nrog cov ntawv qiv nyiaj thaum pom thiab kev hloov nyiaj hauv tuam txhab nyiaj, ua rau lawv haum rau ntau yam haujlwm.

Ntxiv rau cov shingle asphalt uas ua los ntawm cov nplai ntses, kev lag luam ru tsev kuj pom kev nce qib hauv cov shingle hlau uas muaj pob zeb. Nrog rau kev tsim khoom txhua xyoo ntawm 50,000,000 square meters, cov shingle no muab kev xaiv zoo rau cov neeg uas tab tom nrhiav kev siv cov ru tsev ntsuab rau hauv lawv cov qauv tsim. Cov txheej pob zeb muab ib txheej tiv thaiv ntxiv thaum tso cai rau ntau yam xim thiab cov qauv, kom ntseeg tau tias txhua lub tsev tuaj yeem ua tiav qhov zoo nkauj xav tau.

Raws li qhov kev hloov pauv mus raucov shingle ru tsev ntsuabtseem pheej nce siab, cov kws kes duab vajtse, cov neeg ua vaj tse, thiab cov tswv tsev yuav tsum xav txog cov ntaub ntawv uas lawv siv. Cov kev coj ua ruaj khov ua ke nrog cov kev daws teeb meem tshiab ntawm lub ru tsev, xws li cov shingle asphalt shingle thiab cov vuas ru tsev hlau uas muaj pob zeb, tuaj yeem tsim cov tsev uas zoo nkauj, ua haujlwm tau zoo, thiab zoo rau ib puag ncig.

Xaus lus, qhov kev nce ntawm cov ru tsev ntsuab hauv kev tsim niaj hnub no tsis yog tsuas yog ib qho kev hloov pauv xwb, nws tseem yog ib kauj ruam mus rau yav tom ntej uas ruaj khov dua. Los ntawm kev siv cov ntaub ntawv ru tsev zoo uas txhawb nqa cov khoom siv ntsuab, peb tuaj yeem tsim cov chaw hauv nroog uas tsis yog tsuas yog pom kev zoo nkauj xwb tab sis kuj pab tau rau ib puag ncig. Thaum peb txav mus tom ntej, nws yog ib qho tseem ceeb kom txais yuav cov kev tsim kho tshiab no thiab txuas ntxiv thawb cov ciam teb ntawm cov qauv vaj tsev niaj hnub, kom ntseeg tau tias peb lub nroog tseem muaj sia nyob thiab ruaj khov rau ntau tiam neeg tom ntej.