Since the Chinese calendar is a lunisolar calendar, the last day of a year is also called lunar New Year's Eve (Traditional Chinese: å¤§å¹´å¤, Pinyin: dÃ niÃ¡nyÃ¨, translated: old, large, huge, major, important year's night).
While aluminium doesn't rust, it often becomes dull from corrosion, and is often encrusted with brake dust, calcium, lime, tarnish, grease, oil and hard water stains. Simply washing it off will not work, you need something stronger and more effective to do the job.
Aluminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called chromate coating or chromating.General method is to clean the aluminium surface and then apply an acidic chromium composition on that clean surface.luminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called chromate coating or chromating.