(1) Kev tsim nrawm nrawm ntawm ib qho kev siv xeb ruaj khov thiab tsim cov txheej txheem tuab thiab ruaj khov thiab ruaj khov rau hauv cov yeeb yaj kiab steeth, yog tus yuam sij thawj rau cov thev naus laus zis thawj mus rau cov thev naus laus zis
(2) Lub luag haujlwm ntawm cov khoom siv alloy: chromium thiab lwm yam hlau cov ntsiab lus hloov mus rau ib qho kawg ruaj khov txheej, uas feem ntau siv sijhawm 10 xyoo. Qhov tseem ceeb thib ob rau cov thev naus laus zis no yog yuav ua li cas thiaj xaiv cov hlau tsim nyog hauv lub sijhawm, thiab txhawb nqa cov khoom siv sib tsoo xws li CU, P, thiab CR rau hauv cov txheej xeb.
(3) Cov ntaub ntawv organic: Kev tshawb fawb thiab kev txhim kho txheej txheej kev kho mob muaj peb yam: kev kho kom tiv thaiv oxide tshwj xeeb, thiab hlau oxide|Kev kho mob monophosphate. Txawm hais tias yog txheej txheej, ua cov xim hlau lossis cov khoom siv xim lossis cov organics yuav tsum muaj huab cua zoo thiab corrosion tsis kam, thiab zoo li ntxig sooj. Nws tsis tuaj yeem cia qee tus nqi ntawm huab cua thiab dej los muab cov khoom noj muaj xeb, tab sis kuj tuaj yeem tiv thaiv cov hlau thawj zaug ntawm cov huab cua ua kom zoo nkauj, thiab ua kom pom kev zoo nkauj.