Raws li ib qho ntawm feem kev sib tw dai ntawm lub tuam txhab, peb lub teeb ua haujlwm clevis hangers yog UL pom zoo. Thiab lawv tau txais lub npe nrov nrov thoob ntiaj teb, tshwj xeeb tshaj yog Asmeskas North, South America, Middle East thiab Asia. Tsis tas li, lawv tuaj yeem raug kho raws li koj qhov yuav tsum tau ua, piv txwv li, lawv tuaj yeem tsim nrog roj hmab, ntxig lossis ntaub thaiv. Thiab muaj ntau qhov kev kho mob saum npoo av rau koj cov kev xaiv: Pre-galvanized, Zinc plated, epoxy thiab Green galvanized tiav kom tau raws koj qib sib txawv 'anticorrosion xav tau.