相当一个时期以来,我们经常能够听到集邮活动滑坡、邮票市场低迷、集邮协会会员流失的议论。如：“邮政部门为了一时的利益,不规范的发行邮票,制作大量邮品向市场倾销,造成集邮者队伍日益缩小,集邮活动严重滑坡。”(《中国集邮报》2006年8月1日)。“邮市的 For quite some time, we have often been able to hear the slippage of philately, the depressed stamp market and the loss of membership of Philately Association. For example, “the postal service issued non-standard stamps for a temporary purpose and dumped a large quantity of philatelic products on the market, resulting in the ever-shrinking ranks of philatelists and the serious decline of philatelic activities.” (China Philatelic Newspaper, August 1, 2006). "Post-market