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.
Brush a rust-inhibiting primer that includes zinc chromate or iron oxide onto the metal. Allow the primer to dry according to package directions. Repeat, if recommended. Do not use a paint sprayer or spray paint cans for the rust inhibitor, because they will not reach into all the tiny pores on the steel's surface.