Code of Civil Procedure Article 342

Where the document identified to be introduced as documentary evidence is in the opposing party's possession, a party shall move the court to order the opposing party to produce such document.The motion provided in the preceding paragraph shall specify the following matters:1. The identification of document requested to be produced;2. The disputed fact to be proved by such document;3. The content of such document;4. The fact that such document is in the opposing party's possession; and5. The reason why the opposing party has a duty to produce such document.Where there exists manifest difficulty in specifying the matters provided in the first and the third subparagraphs of the preceding paragraph, the court may order the opposing party to provide necessary assistance.
中文原文 民事訴訟法第342條
聲明書證,係使用他造所執之文書者,應聲請法院命他造提出。
前項聲請,應表明下列各款事項:
一、應命其提出之文書。
二、依該文書應證之事實。
三、文書之內容。
四、文書為他造所執之事由。
五、他造有提出文書義務之原因。
前項第一款及第三款所列事項之表明顯有困難時,法院得命他造為必要之協助。

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