... 12.8kg/ctn pu leather stationery spiral advertising promotional gift file folderstationery file folder 244x322x28mm15pcs/ctn12.8kg/ctn 1.Cover: fabric, leather, PP ... , month plan,calendar,address4. Binding: Binding with sprial , glue , six ring, wire binding, glue binding, sewn-glued binding, Saddle stitch,section ...