... furniture frames:metal sofa frame,sofa mechanism,folding hinges 2.made of CNC Bending machine,Electronical Welding. Furniture Frame: 1. ... Surface treatment: powder coating or painting, Surface Oxidizing,metal polishing, dephosphorization,Silkscreen or by request3. ASTM ,AISI ... materials, sizes, surface treatments, shapes and sheet metal processing precision as per customers.With profound experience of ...