Muaj ntau ntau hom tuam txhab uas muag los yog manufacturers nyob rau hauv lub qhov rooj kov kev lag luam:
Qhov thib ib yog ua raws li cov qauv tsim ntawm lwm lub tuam txhab lossis cov tuam txhab tsim khoom. Cov khoom lag luam ntawm cov tuam txhab lossis cov tuam txhab lag luam tsis muaj cov qauv tsim tshiab thiab muaj peev xwm los tsim cov khoom tshiab.
Qhov thib ob yog cov tuam txhab lossis cov tuam txhab lag luam uas feem ntau muab aluminium alloy qhov rooj kov, stainless hlau qhov rooj kov lossis hlau qhov rooj kov. Cov khoom lag luam no feem ntau suav tias yog qhov ntau, tus nqi-rhiab heev, thiab tsis tas yuav tsum tau tsim khoom thiab kev tsim kho tshiab.
YALIS, lub chaw tsim khoom rau zinc alloy qhov rooj kov thiab qhov rooj kho vajtse daws teeb meem, tsis yog tsuas yog nrog cov khoom tsim muaj peev xwm rau ntau yam ntawm cov neeg siv khoom thiab qhov rooj daim ntawv thov scenarios, tab sis kuj nrog kev lag luam thiab kev nce qib hauv kev lag luam sib txawv.
Qhov thib peb yog Italian ua hom. Lawv cov khoom yog ua los ntawm tooj dag. Lawv lub npe nyiam lub koob npe nrov heev thoob plaws ntiaj teb. Txawm li cas los xij, lawv cov khoom yuav muaj rau cov neeg siv khoom me me --- cov neeg siv khoom kim heev.
