Metal ring binder,stationery mechanisms  manufactured by Dongguan Taoyuan Stationery Co., Ltd feature smooth operation with no damage to files and fit closeness between matching hooks.

 Main specifications/special functions: Elegant appearance, stable structure, scratch and indention resistance intensified folder structure, deformation resistance Materials: Strip steel (supplied by Guangzhou Jinlai Cold Rolling Steel Strip Co., Ltd.)

Surface treatment: Nickel plating, non-nickel (passing the tests of 10 metals and with SGS inspection report available) Optional width for bottom board: 10mm, 15mm, 17mm, 20mm, 26mm, 36mm, 45mm Total length option: 89mm, 123mm, 133mm, 152mm, 158mm, 171mm, 195mm, 210mm, 241mm, 264mm, 280mm, 285mm, 292mm, 384mm Inner diameter option: 11mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 65mm, 78mm Shape option: Q-shaped, R-shaped, D-shaped and slanting D-shaped Type option: patented products, regular products OEM is accepted.