... fades prolonged 3. Easy cleaning What’s space aluminumAluminum-magnesium alloy is worked specially by high temperature oxidation, it can ... clean cloth. Advantages and shortcomings: aluminum alloy, zinc alloy, stainless steel, copper1. Aluminum alloy as a new material in recent ... simple style decoration, and price is rather attractive2. Zinc alloy as the earlier material for door& lock hardware, it ...