Regulations Governing Licences and Ratings for Airmen Article 103

A certificated repairman of repair station may perform or supervise the maintenance, preventive maintenance, alteration and return to service of aircraft components in accordance with approved of the repair station. The repairman shall also be under the supervision and assessment of the repair station.A certificated repairman may not perform or supervise duties under the repairman certificate unless the repairman understands the maintenance procedures of the repair station, civil air transport enterprise or general aviation and relevant technical manuals / specifications.A certificated repairman shall not perform a certificate of return-to-service for aircraft on behalf of an aircraft maintenance engineer.
中文原文 航空人員檢定給證管理規則第103條
維修員應在所屬維修廠檢定授權範圍內,依照核准之作業程序,執行航空器零組件維修或督導、預防性維護、改裝及恢復可用簽證,並受該維修廠之監督、考核。
維修員應瞭解維修廠、民用航空運輸業或普通航空業之手冊及相關技術規範,始得執行或督導其所核可之檢定項目。
維修員不得代替航空器維修工程師從事航空器之恢復可用簽證。

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