Tus nqi ntawm cov khoom siv hauv tsev yog siab heev, yog li yuav muaj ntau qhov kev txiav txim siab hauv kev yuav khoom, tsis nkag siab cov khoom lag luam yog xav txog ob zaug, cov ntaub ntawv hauv tsev tam sim no rau asphalt shingles, ntau tus neeg tsis ntseeg txog cov khoom no, cov hauv qab no los ntawm nws qhov kev nkag siab los piav qhia qhov zoo ntawmasphalt shingles.
I. Cov nqi khoom muag
Cov khoom siv rau lub sijhawm ntev yuav ua rau tib neeg pom kev qaug zog, thiab ntau yam khoom siv asphalt shingle, cov khoom xim yog nplua nuj, thiab muaj cov yeeb yuj lub koob npe nrov, yog li cov neeg siv khoom muaj kev xaiv ntau dua rau asphalt shingle.
Peb, cov khoom zoo
Lub tuam txhab txais cov iav fiber ntau, kub kub sintered xuab zeb, qib high-qib txoj kev asphalt thiab lwm yam khoom siv raw, ua tiav, tuaj yeem hu ua pheej yig thiab zoo, thiab muaj cov dej tsis zoo, kev txuag hluav taws xob, suab rwb thaiv tsev thiab lwm yam ntxwv, nyiam los ntawm cov neeg siv khoom, nws lub neej kev pabcuam tuaj yeem ncav cuag ntau tshaj 30 xyoo, belongs rau lub teeb lub tsev cov ntaub ntawv, zoo heev txo lub ru tsev hnyav.
Post lub sij hawm: Sep-02-2022
