... Model 5: HC-NB100Description: Hard Cover Notebook, Sewing binding, A5 size, 100sheets Can Supply all kinds of ... PP cover, hard cover, papercard cover... 3) Spiral binding, glue binding, sewing binding...4) Arabic ruling, English ruling, Square ruling...Model 6 ... PP cover, hard cover, papercard cover... 3) Spiral binding, glue binding, sewing binding...4) Arabic ruling, English ruling, Square ruling...