Hais txog kev teeb tsa, cov asphalt shingle yooj yim rau kev teeb tsa thiab muaj lub sijhawm luv luv hauv kev tsim kho, ua rau txuag tau cov nqi zog thiab lub sijhawm. Nws qhov hnyav sib dua kuj txo qhov hnyav ntxiv rau ntawm lub ru tsev, ua rau nws siv tau dav.

Ua ib lub chaw tsim khoom txhim khu kev qha hauv daim teb no, Tianjin BFS tau cog lus tias yuav tsim cov asphalt shingle zoo txij li thaum nws tau tsim tsa xyoo 2010. Nrog ntau tshaj 15 xyoo ntawm kev paub txog kev lag luam, Mr. Li, tus tsim lub tuam txhab, coj pab pawg neeg los txhim kho kev ua tau zoo thiab kev ruaj khov ntawm cov khoom, kom ntseeg tau tias lub neej ua haujlwm ntawm cov vuas tuaj yeem ncav cuag 15 txog 40 xyoo, muab kev tiv thaiv mus sij hawm ntev thiab txhim khu kev qha rau cov tswv.

Xaus lus,Liab Asphalt Ru Tsev Shingletsis yog tsuas yog ua rau lub tsev zoo nkauj dua xwb, tab sis kuj, nrog rau lawv cov kev ua tau zoo thiab tus nqi pheej yig, tau dhau los ua qhov kev xaiv zoo tshaj plaws rau kev ru tsev hauv tsev. Kev xaiv lub npe txhim khu kev qha zoo li Tianjin BFS tsis yog tsuas yog txhim kho qhov zoo ntawm koj lub neej xwb tab sis kuj muab kev thaj yeeb nyab xeeb rau koj mus ntev.