What is the size of full opening?

The domestic standard for a piece of fully opened paper is 78. 1 cm× 108.6 cm, and the international standard is 84.4cm×116.2cm. ..

There are international standards and domestic standards for paper, that is, the international standard is called generous paper and the domestic standard is called positive paper. The standard orthogonal paper is the paper with the size of 787× 1092(mm). Can be cut into the following specifications: B 1 (face to face, 520×740mm), B2 (face to face, 370×520mm), B3 (face to face, 260×370mm), B4 (face to face, 185×260mm), B5.

Types of folio

Large format books, format 12 or more, are suitable for thick books or periodicals with more charts and pages. Medium-sized books, all folio sizes from 6 to 32, belong to universal folio and have a wide range of applications. All kinds of book printing can be applied to manuals, reference books, popular books or short film documents.

Children's books use square format, mostly 24 folio, with few words; Most picture albums, photo albums and professional books are above 18, mostly in plate format, and some special-shaped formats depend on the specific book content. In the design process, the size of folio is also determined according to the length of the book.