2011年第11期《集邮博览》刊登了《企业金卡的附加功能》一文,介绍了定制型邮政贺卡的8项附加功能。近年来,笔者陆续收集到一些具有其它附加功能的邮政贺卡,其中大多是普通型,也有信卡和贺卡封,本文择要介绍给大家。宣传普及各类知识:利用邮政贺卡宣传普及文化科学知识、法律法规等各类知识是一项公益活动。北京奥运会前夕,北京市印制了一批2008年普通型贺卡,以普及奥运知识(图1)、宣传文明观赛常识(图2)。湖南株洲 2011 Issue 11 “Philatelic Expo” published an article titled “Additional Functions of Enterprise Gold Card”, introducing 8 additional functions of the customized postal card. In recent years, the author has successively collected some postal greeting cards with other additional functions, most of which are of ordinary type as well as letters and greeting cards, and this article is intended to be introduced to everyone. Publicity and popularization of various types of knowledge: the use of postal cards to promote universal cultural and scientific knowledge, laws and regulations and other types of knowledge is a public service activities. On the eve of the Beijing Olympic Games, Beijing Municipality has printed a batch of ordinary greeting cards in 2008 to popularize Olympic knowledge (Figure 1) and promote the common sense of civilization (Figure 2). Zhuzhou, Hunan