Ib lub tee, tseem hu ua yeeb nkab tee, yog ib qho haum lossis txuas. Nws feem ntau yog siv los hloov cov kev taw qhia ntawm cov dej ntws, muab tso rau qhov twg cov kav dej loj tawm. Lawv tuaj yeem raug cais los ntawm cov yeeb nkab txoj kab uas hla. Cov ntaub ntawv muaj xws li carbon steel, cam khwb cia hlau, hlau alloy, stainless hlau, tooj liab, aluminium alloy, yas, argon-bonded asphalt, thiab PVC.
Lub tee yog cov yeeb nkab tshuaj haum nrog peb qhov qhib: ib qho nkag thiab ob qhov hluav taws xob, lossis ob lub qhov hluav taws xob thiab ib lub qhov hluav taws xob. Nws los hauv T-puab thiab Y-puab, nrog txoj kab uas hla sib npaug lossis txo qhov qhib, thiab siv qhov twg peb cov kav dej sib npaug los yog sib txawv. Lub luag haujlwm tseem ceeb ntawm tee yog hloov cov kev taw qhia ntawm cov dej ntws.
