The best way to clean aluminum frames from an outdoor bench factory is to use the mildest method that removes the soil, then dry the frame immediately. Start by removing protective film and loose dust with compressed air or a soft brush; never use a wire brush, steel wool, or a sharp scraper. For normal factory dust, fingerprints, and packaging residue, dilute a neutral-pH detergent in warm water, apply it with a microfiber cloth or soft nylon brush, and wipe in small sections. Do not let water sit on seams, welds, inserts, or hardware. For oily marks, test a small amount of isopropyl alcohol or an approved mild degreaser on a hidden area first, then wipe with clean water. If the frame is powder-coated or anodized, avoid strong acids, strong alkalis, chlorine bleach, and abrasive polishes, because these can dull or damage the finish. Rinse with low-pressure water or a damp cloth, then dry with a clean microfiber towel and use compressed air in gaps. Inspect for scratches or coating damage and touch up according to factory specification. In a production setting, keep cleaning stations separate from assembly, use PPE, control wastewater, and document cleaner dilution and dwell time. For bulk orders, ask the factory for the recommended cleaner and finish care sheet. This process protects appearance, prevents corrosion, and keeps outdoor bench frames ready for packing or installation.