我来写，你来译！
they are producing books in all kinds of different formats!
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they are producing books in all kinds of different formats!
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they are producing books in all kinds of different formats!
他们正在出版各种类型的图书。
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they are producing books in all kinds of different formats!
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I'm confused about the word "format", cause in computer "format" refers to ".doc, .txt, .pdf and so on", so I searched iciba for it:
他们出版各种不同开本的书籍。
so formate here means the size of book: in eights八开, in sixteens十六开