This standard specifies the technical specifications for paper used in primary and secondary school textbooks. This standard applies to letterpress printing or monochrome offset printing primary and secondary school textbook paper.
QB/T 3527-1999 history
2005QB/T 2693-2005 Offset paper for multi-color printing
1990QB/T 3527-1999 Textbook paper for primary and secondary schools
QB/T 3527-1999 Textbook paper for primary and secondary schools was changed to QB/T 2693-2005 Offset paper for multi-color printing.