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多数外国邮政集邮服务寄递新邮宣传资料和预订单采用“邮政公事”,而南非邮政集邮服务采用的是专用邮资信封。除了寄STAMPS杂志使用的始终如一的单调的白色塑料
Most foreign postal stamp service delivery of new postal promotional materials and booking orders using “postal business”, and South Africa Post Philatelic service using a dedicated postage envelope. In addition to STAMPS magazines used consistent monotonous white plastic