I have made and continue to make extensive use of the adhesive book rolls. Sadipal used to be good. Now they have reduced the thickness, resulting in the application being unsuccessful many times, difficult to peel off, and causing leakage during the peeling process. It also tends to fold and stick the adhesive surfaces together. Very dissatisfied with the product. If there are qualities, the merchants should mention the qualities and not lower the price by lowering the quality.