Dab tsi yog Chromate Conversion Txheej / Alodine / Chem Film?Lub sij hawm nyeem 3 feeb Introduction Chromate conversion txheej kuj paub raws li alodine txheej los yog Chem zaj duab xis, nws yog ib hom conversion txheej siv passivate txhuas, qee zaum steel, zinc, cadmium, tooj liab, nyiaj, titanium, magnesiu ...
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