China Aluminium Alloy External Hinge Manufacturer Junying Supplies Aluminium Alloy Free Swinging Hinges for Doors and Cabinets, 100% Inspection. Basic Info. Type: External Hinge, Free Swinging Hinge. Material: Aluminium Alloy. Surface Treatment: Anodizing, Power Coating, Zinc Plated, Chrome Coated, Nickel Plated, etc. Application: Door, Cabinet. Origin: Dongguan, Guangzhou, China. Inspection: 100% Inspection. Packing: Carton and Pallet or as your requirements. We offer OEM services and accept customized orders.