... experience; 3. Low price, high quality; 4. SGS certificate A4 2" 3" paper files BrandTonghongMaterialCoated paper, special paper, ivory cardboard, art ... paper, foil paper, brown/white kraft paper, card, etcMetal ring2", 2.5" OR 3", NICKEL FREESurface finishedGlass/matt lamination, varnishing, UV ...