Spec Description: Pages: inner:326pages 4C,lining papers:8P 4C, Binding:binded & Stitched every 7 or 8 sheets, with 2 book marks in each book. "Cover: Hard Cover, 1800 gram, gray board. Inside front and back covers should have 250 gram cream colored paper. The PU should have a woven material on the inside, which will make it stronger." Inner top and inner bottom supporting base: 250g cream-coloured light paper Inner: 70g cream-coloured light paper by color printing,keep the same density as your sample. "Spine:Round Spine and the 3 sides of the book (edges) should be printed in 3-colors matching to cover (like book sample I sent you)"