The Prime Notary Service Blog
Affidavits of Support and Sponsorship Letters: Getting Them Right
Published on: 14/07/2026
An affidavit of support or sponsorship letter has to be accepted the first time. Here's what notarization adds and how to avoid common mistakes.
Immigration & Authentication
经济担保书与担保信：一次就办对
Published on: 10/07/2026
经济担保书或担保信，必须一次就被接受。本文讲清公证起到什么作用，以及如何避免常见错误。
Immigration & Authentication
海牙公约生效后，发往中国的文件如何做“附加证明书（Apostille）”？
Published on: 10/06/2026
自2023年11月海牙《取消认证公约》对中国生效后，美国文件用于中国的认证流程更简单了。本文梳理目前的最新情况。
Immigration & Authentication
Apostille for China After the Hague Convention: What Changed
Published on: 09/06/2026
Since the Hague Apostille Convention took effect for China in Nov 2023, authenticating U.S. documents for China is simpler. Here's the current process.
Immigration & Authentication
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