Code of Civil Procedure Article 355

A document, which by formality and tenor may be considered a public document, is presumed to be authentic.Where there is doubt with regard to the authenticity of a public document, the court may request the government agency or public officer in whose name such document is issued to make a statement.
中文原文 民事訴訟法第355條
文書,依其程式及意旨得認作公文書者,推定為真正。
公文書之真偽有可疑者,法院得請作成名義之機關或公務員陳述其真偽。

English translation for reference only; the Chinese text prevails. Not legal advice.