Regulations Governing the Permission and Management of the Export, Research & Development of Imitation Firearms Article 15

If the place where a manufacturer operates has been changed, the manufacturer shall respectively submit the original approval document and information on the change in writing to notify the municipal or county (city) police departments of both its old and new locations and get the change registered within one month from the day following the change.
中文原文 模擬槍許可及管理辦法第15條
廠商所在地變更時,應於變更之翌日起一個月內,連同原許可文件及異動資料,以書面分別通知變更前、後所在地之直轄市、縣(市)政府警察局辦理異動登記。

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