Cardboard Cover Spiral Books

Features:
1) Size: a4, a5, a6, a7 and various
2) Cover: Double side white cardboard 170g/m2, gloss or matt lamination,
    or 55 microns (a4) or 18 microns (a5, a6) pp
3) Printing: 4 colors offset
4) Inner pages: 80g offset paper, 90% above whiteness with various pages for 
    example 200 or 400
5) Customers' sizes and designs welcome 

Packing:
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