The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

CN004.12

Country / Post China (People's Rep)
Date of Issue 23 February 2012
Primary theme Economy & Industry
Literature, Press and Comics
Subject Zhonghua Book Company
Width 30.0 mm
Height 50.0 mm
Denomination 1.20 CNY
Number in set 1
Layout/Format sheet of 15
Perforations 13.5 by 13.5
Stamp issuing authority State Post Bureau China National Philatelic Corporation
Printer Shenyang Post and Telcommunications Printing Works