Lub qhov rooj hluav taws yuav tsum tau haum nrog kev pom zoo initter strips uas ua si ib qho tseem ceeb hauv kev ua tiav qhov rooj hluav taws kub. Thaum raug cua sov, lub intumeCov ntxhiab tsw nthuav nthuav nthuav dav thiab ntim qhov sib txawv ntawm lub qhov rooj ntug thiab tus ncej. Intumescent ntsaws ruaj yuav haum hauv lub qhov rooj thav duab lossis grooved rau hauv lub qhov rooj ntug. Cov lus qhia ntawm cov hlab intumescent tuaj yeem tau txais los ntawm daim ntawv ceeb toom pov thawj, uas peb tuaj yeem muab tau.
Cov khoom siv uas lub qhov rooj thav duab yog tsim, thiab raws li nws seem seem uas nws tau ua raws cai. Tsis tas li ntawd, cov khoom tseem ceeb yuav tsum muaj nws cov ntawv pov thawj kev kuaj mob los qhia txog kev ua kom muaj lub hom phiaj.
