Regulations Governing Exemption from Certification for Mechanical Products Article 11

For products, imported or domestically manufactured, that are approved to be exempted from certification, the obligatory applicant shall maintain the production and marketing records, export documents, type certification of final products, etc. for 3 years under any of the following circumstances:1. Commercial samples or products for exhibition that are not to be used or put into operation, or2. Components or accessories for further processing or assembly, certification of which shall be performed on final products after assembly or processing and the certification criteria are the same as those of the final products.
中文原文 機械類產品申請免驗證辦法第11條
輸入或國內產製品,經准予免驗證,而有下列情形之一者,報驗義務人應建立產品之產銷文件、出口證明文件、成品之型式驗證合格證明等相關文件,並保存三年備查:
一、非供實際使用或作業用途之商業樣品、展覽品。
二、供加工、組裝用之零組件、配件,其驗證須以加工組裝後成品執行,且驗證實施規範與其成品之驗證實施規範相同者。

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