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 20

When conducting vehicle’s recall and correction, manufacturers, import agents and importers shall submit the progress record report of previous month’s recall and correction task in written report to the professional institution before the 15th day of each month.Within 15 days after accomplishing the task according to the recall and correction plan, the manufacturers, import agents and importers shall complete the vehicle’s safety recall and correction report and offer it to the professional institution for approval and sending to the MOTC for future reference. After manufacturers, import agents and importers have done the recall and correction operation up to 90%, and the professional institution has made actual check to confirm that it’s apparently difficult to keep the operation going, the professional institution can report to the MOTC and get its consent to terminate submitting progress report. Manufacturers, import agents and importers then offer vehicle’s safety recall and correction report to the professional institution for approval and then submit to the MOTC for future reference.
中文原文 汽車安全性調查召回改正及監督管理辦法第20條
製造廠、進口商或進口人進行汽車召回改正,應按月於每月十五日前以書面方式向專業機構提送前一個月召回改正執行紀錄報告。
製造廠、進口商或進口人依召回改正計畫完成改正後,應於十五日內作成汽車安全性召回改正報告提送專業機構查核認可後,送請交通部備查。
製造廠、進口商或進口人召回改正完成率達百分之九十以上,經專業機構查核確認其繼續執行顯有困難者,得報經交通部同意後,停止提送召回改正執行紀錄報告,並作成汽車安全性召回改正報告提送專業機構查核認可後,送請交通部備查。

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