邮寄广告应该规范了李庆邮寄信函广告，简称ＤＭ广告。是指以邮政渠道为媒体，向特定群体传递商品信息的广告形式。在西方资本主义国家，随邮政事业的发展ＤＭ广告已开展了近一百年。美国用于ＤＭ广告的费用仅次于其投入报纸和电视广告的费用。而丹麦的ＤＭ广告费用更是占... Mailing advertisements should standardize Li Qing’s mailing advertisements, or DM advertisements for short. It refers to the form of advertising that uses the postal channels as the media to deliver product information to specific groups. In western capitalist countries, DM advertising has developed for nearly a hundred years with the development of postal services. The cost of DM advertising in the United States is second only to the cost of investing in newspapers and television advertising. And Denmark’s DM advertising costs more...