... colors are welcomed3. Customized designs and requirements are welcome4. File folder use for office, school, market and promotion 5. Excellent printing ... .3. Cardstock thickness: 2.0mm,, 2.5mm, 3mm.4. Size: A4,FC.5. Spine size: 1",1.5",2",2.5 ... Printing Co., Ltd, with the experience of ring binder and folder production for more than one decade, primarily serve the major ...