Metoade 1: spegel anodisearre aluminium sheet, nei it ripen fan de beskermjende film, oanreitsje de spegel mei dyn fingers, de switflekken op jo fingers bliuwe boppe op 'e spegel, mar nei scrubbing mei in droege doek of papieren handdoek, fingerprinten wurde skjinmakke en sille gjin spoar efterlitte.

Net nei de oksidaasje fan de spegel aluminium plaat is net itselde, leaving the fingerprints will be more and more dirty, and ultimately can not recover the role of the mirror.

Metoade 2: put the anodized mirror aluminum plate in the ear bend, if there is a slight cracking sound clarification that is anodized mirror aluminum plate, if not that is not anodized mirror aluminum plate.

Metoade 3: the mirror aluminum plate to do 90 degrees T bend, anodized mirror aluminum plate in the T bend will have a slight whitish appearance, which is the reason for the anodic oxide film burst, if the mirror aluminum plate without anodic oxidation does not have this appearance.