Cov tes tuav chav dej yog cov khoom tuav lossis tes ua ke hauv chav dej lossis chav dej kom muaj kev sib npaug lossis pab txhawb lub cev. Nws tuaj yeem tiv thaiv kev laus thiab menyuam yaus kom tsis txhob poob thiab poob rau ntawm qhov chaw zoo nkauj.
-Qhov ruaj thiab ruaj, tsim cov qauv tsim, yooj yim thiab cov tswv yim.
-Qhov ruaj khov, siab ceev, hnyav hnyav, tsis tuaj yeem tev, tsis muaj fading tom qab electroplating thiab polishing, tsis yooj yim rau xeb, tsis yooj yim rau kev laus, thiab tsis yog los daws cov qauv thoob plaws hauv qhov chaw ntub dej.
-Corrosion tsis kam, siab kub thiab tsis kub tsis kam, muaj zog ruaj khov, tsis muaj fading, los tiv thaiv kev ua haujlwm, ua haujlwm zoo khi.
-Thiab saum npoo yog ci chrome plated, nrog kev ntxhib los mos zoo meej, muaj zog plating adhesion, tsis muaj xeb, tsis xeb. Nrog lub zog tiv thaiv kev tiv thaiv thiab los tiv thaiv kev ua haujlwm, kev sib khi zoo sib xyaw, txheej txheej txheej, pom kev tuab, thiab qaim xim xim zoo li daim iav.