Raws li ib qho ntawm feem kev sib tw dai ntawm lub tuam txhab, peb cov kab teeb liab sab saum toj clamps 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, Europe thiab Asia. Kuj, muaj ntau yam kev kho saum npoo rau koj cov kev xaiv: Pre-galvanized, Zinc plated, epoxy thiab Green galvanized tiav kom tau raws koj cov qib sib txawv ntawm cov kev xav tau.