When selecting airport trolleys, the material choice directly impacts the lifespan and maintenance costs. High-strength Aluminum Alloy is the premium choice due to its lightweight nature and corrosion resistance, making it ideal for humid or coastal environments. Alternatively, Stainless Steel (Grade 304) offers superior structural integrity for heavy-duty use. Ensure the surface is anodized or powder-coated to prevent scratches and maintain a professional aesthetic over years of high-frequency operation.