1 individual bookstores in the market are generally divided into three types: 1 books in the market are all fast-selling and must be bestsellers; 2 teaching AIDS, aiming at the amount of students walking; 3 professional books: academic.

The naked eye looks very flat, and there are no errors such as off-line, off-page, binding and hard brushing.

3 Different book pricing measures are different, and the specific discount intensity is also different. This still needs to be discussed.