2024年4月16日 · The Postal Service is a member of the Universal Postal Union (UPU), a United Nations’ organization. Established in 1874, the UPU, is the second-oldest international organization worldwide. It is headquartered in Bern, Switzerland. With its 192 member countries, the UPU is the primary forum for cooperation between posts.

Established in 1874, the Universal Postal Union (UPU), with its headquarters in the Swiss capital Berne, is the second oldest international organization worldwide. With its 192 member countries, the UPU is the primary forum for cooperation between postal sector players.

Member countries of the Universal Postal Union (UPU) have agreed to use certain documents in the processing and delivery of mail. In conjunction with that agreement, the Postal Service uses both directives and forms to help process and deliver international mail.

The Universal Postal Union (UPU, French: Union postale universelle) is a specialized agency of the United Nations (UN) that coordinates postal policies among member nations and facilitates a uniform worldwide postal system.

万国邮政联盟（法语： Union postale universelle ；英语： Universal Postal Union ；缩写： UPU ），简称万国邮联，是联合国协调 会员国 （ 英语 ： Member state ） 之间邮务 政策的专门机构，也是世界性的邮政 国际组织，总部设于瑞士 伯恩。

2025年3月12日 · The Universal Postal Union is a United Nations specialized agency and the postal sector's primary forum for international cooperation.

万国邮政联盟（Universal Postal Union，UPU），简称“万国邮联”或“邮联”，是商定国际邮政事务的政府间国际组织，其前身是 1874年10月9日成立的“邮政总联盟”，1878年改为现名。

The UPU has now 192 member countries. Union expenses are financed jointly by the member countries, through a contribution class system. Upon admission to the Union, new member countries are free to choose one of ten contribution classes ranging from one to 50 units.

萬國郵政聯盟（法語： Union postale universelle ；英語： Universal Postal Union ；縮寫： UPU ），簡稱萬國郵聯，是聯合國協調 會員國 （ 英语 ： Member state ） 之間郵務 政策的專門機構，也是世界性的郵政 國際組織，總部設於瑞士 伯恩。

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