Cov kev daws teeb meem muaj zog rau kev lag luam loj hlob
Qhov hluav taws kub hose tuaj yeem raug cais raws li qhov sib txawv, xws li kev tsim kho, qhov loj me, thiab kev npaj siv. Cov kev faib tawm feem ntau yog nyob ntawm txoj kab uas hla ntawm lub hose thiab cov dej uas nws tuaj yeem xa tuaj rau ib feeb.
Chav Kawm A qhov hluav taws kub hoses muaj txoj kab uas hla ntawm 1.5 ntiv tes thiab tuaj yeem xa tawm ntawm 60 mus rau 150 nkas loos dej ib feeb. Lawv feem ntau yog siv rau cov hluav taws kub zoo li cov ntoo, ntawv, thiab ntaub.
Class B hluav taws hoses loj dua nrog txoj kab uas hla ntawm 2.5 ntiv tes. Lawv tuaj yeem xa tawm ntawm 100 mus rau 250 nkas loos dej ib feeb thiab siv rau cov hluav taws kub uas muaj cov nplaim hluav taws kub hnyiab tau zoo li roj av, roj, thiab roj av.
Class C hluav taws hoses yog cov hoses tshwj xeeb uas siv rau hluav taws xob hluav taws xob. Lawv yog ua los ntawm cov ntaub ntawv uas tsis yog-conductive thiab yog tsim los tiv thaiv cov hluav taws xob tam sim no los ntawm kev ncav cuag tus neeg tua hluav taws.
