The book number is ISBN, the most intuitive bar code on the back cover of the book and the string of numbers. It is distributed to all publishing houses by the General Administration of Press and Publication. The domestic ISBN is still on the second page of the book (generally on the reverse side of the title page) with CIP data, also called copyright page. These two are two indispensable data in the domestic map book.

Domestic ISBN, what kind of publishing house is this number? National publishing houses are more expensive and provincial publishing houses are cheaper, but the cheaper ones should be about 15000 per book.

ISBN (Hong Kong Book Number), which is much cheaper, 1500 is enough.

However, if you want to sell your book in China after publication, you must choose domestic ISBN for publication.

If your book is only free in China after publication, you can choose Hong Kong ISBN to publish it.

Detailed consultation: www.bjhhlt.com.