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Qingdao Beihai Hardware Co.,Ltd is one the leading China engine parts manufacturers and suppliers with products processing,Website:http://www.sd-oem.com, welcome to import OEM engine parts from our factory.1. The car's engine are usually die cast iron, some advanced engine with magnesium, aluminum alloy, so some lighter, reduce vehicle weight, and heat dissipation is better than cast iron.2. The difference between the titanium magnesium and magnesium alloy:A, aluminium magnesium alloy:(1) aluminum magnesium alloys generally is the main element, and then mixed with a small amount of magnesium a