Regulations for Motor Vehicle Safety Investigation, Recall /Correction, Supervision and Management(The official Regulations are written in Chinese, this English edition is for your reference only.) Article 3

The MOTC may authorize professional technical Institution with specialties in vehicle and has ability and testing facilities (hereinafter, the professional institution) to conduct the investigation specified in the previous article and check the effectiveness of recall and correction.The MOTC shall issue the authorization and it’s relevant Regulations and publish on government gazettes or newsletters.
中文原文 汽車安全性調查召回改正及監督管理辦法第3條
交通部得委託具有汽車安全性調查能力及設有檢驗設備之車輛專業技術機構(以下簡稱專業機構)辦理前條之調查及召回改正成效查核事宜。
交通部應將前項委託事項及法規依據公告之,並刊登政府公報或新聞紙。

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