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Aluminum alloy heat dissipation modules for street lights, plant grow lights, and car headlights. Common aluminum extrusions include: 1. Aluminum extrusion heat sink 2. Aluminum extrusion light tube heat sink Characteristics of aluminum extrusions: 1. **Corrosion Resistance** - Aluminum extrusions have a density of only 2.7 g/cm³, about one-third that of steel, copper, or brass (7.83 g/cm³, 8.93 g/cm³, respectively). Under most environmental conditions, including air, water (or saltwater), petrochemical, and many chemical systems, aluminum demonstrates excellent corrosion resistance. 2. **Electrical Conductivity** - Due to its excellent electrical conductivity, aluminum extrusions are often chosen. On an equal weight basis, aluminum’s conductivity is nearly twice that of copper.