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普通邮资封片作为广告和宣传载体时下也颇有市场,这既是邮政部门一个新的经济增长点,也是集邮爱好者普遍关注的
As a carrier of advertising and publicity, ordinary postal covers also have quite a market nowadays. This is not only a new economic growth point of the postal service, but also a common concern of philatelists