Okeerẹ pickling ati passivation ti irin alagbara, irin, yiyọ orisirisi awọn abawọn epo, ipata, ohun elo afẹfẹ, solder isẹpo ati awọn miiran idoti.Lẹhin itọju, dada jẹ funfun fadaka ni iṣọkan, imudarasi resistance ipata ti irin alagbara, irin, o dara fun ọpọlọpọ awọn ẹya irin alagbara irin ...
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