Enforcement Rules of the Government Procurement Act Article 87

The term "major part" referred to in paragraph 2 of Article 65 of the Act means any of the following circumstances:1. the major part specified in the tender documentation; and2. a part which shall be fulfilled by the winning tenderer itself specified in the tender documentation or pursuant to other laws and regulations.
中文原文 政府採購法施行細則第87條
本法第六十五條第二項所稱主要部分,指下列情形之一:
一、招標文件標示為主要部分者。
二、招標文件標示或依其他法規規定應由得標廠商自行履行之部分。

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