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.

CN056.11

Country / Post China (People's Rep)
Date of Issue 22 June 2011
Primary theme National symbols (Flags)
Politics & Government (Political Thought)
Subject 90th Anniversary of the Founding of the Communist Party of China
Width 50.0 mm
Height 42.0 mm
Denomination 6.00 CNY
Number in set 7 (show set)
Layout/Format miniature sheet of 1
Perforations 13 by 13
Stamp issuing authority State Post Bureau China National Philatelic Corporation
Printer Beijing Postage Stamp Printing House