广州市邮政局为了向邮政用户征询意见,印制了邮政用户意见专用免资封。据笔者收集的资料,有以下几种不同版式: 图1为2 号普通信封, 胶版纸,刷色蓝,广州六中印刷厂1992年3月印刷,印量500000枚, 封内装有《用户意见征询函》。图2规格如图1,胶版纸,刷色绿, In order to solicit comments from postal users, the post office of Guangzhou Municipality has printed the postal user’s opinions on the special exemption of postal envelopes. According to the information collected by the author, there are several different formats: Figure 1 for the No. 2 ordinary envelopes, offset paper, brush color blue, Guangzhou 6 printing in March 1992 printing, printing 500000, sealed with “user comments Call for letters. ” Figure 2 specifications shown in Figure 1, offset paper, brush color green,