Xav kom koj lub tsheb yuav zoo nkauj dua zuag qhia tag nrho? Los yog xav tau qee qhov chaw yas kom kho, txawm tias cov xim tha xim sab hauv tsis tau nruab los ntawm tus kov, koj tuaj yeem tswj cov xim tha xim? Thaum nws los txog rau lwm cov yam ntxwv uas tsis muaj dab tsi ntau dua li ruaj, tiv thaiv xeb, kho kom zoo nkauj, lossis dej tsis qab, nws yog chrome plating. Nickel plating tsuas yog siv rau kev tiv thaiv dej, thiab cov nyhuv ua kom zoo nkauj tsis zoo li chrome plating, tab sis kuj tseem muaj cov uas tsis kam nickel plating, uas feem ntau tsis tsim nyog, tab sis chrome plating tom qab nickel plating, thiab tooj liab plating ua ntej nickel plating. Qhov ua hauj lwm dej ua ke yog nyob ntawm cov tuab tooj liab plating. Vim tias tooj liab yog pheej yig dua li npib tsib xee, cov xim tooj liab hloov pauv nickel los txo tus nqi.
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