Regulations Governing the Permission and Management of the Export, Research & Development of Imitation Firearms Article 8

The manufacturer shall a give notice to the approving authority for conduct inspection within 6 months from the day following the receipt of the approval document under Article 4 and shall complete the approved items. The approving authorityshall issue an inspection document after the manufacturer passes inspection.If the manufacturer is unable to complete the approved items before the deadline under the previous paragraph for any reason, it shall state the grounds in writing and file an application for extension with the approving authority 15 daysbefore the expiry of the deadline. A maximum of two months and a maximum of three extensions may be granted. The original approving authority shall follow Article 5 after receiving the application.
中文原文 模擬槍許可及管理辦法第8條
廠商應於收受第四條許可文件之翌日起六個月內,通知原許可機關查驗,並完成經許可之項目;經查驗符合許可內容後,由原許可機關發給查驗文件。
廠商因故無法於前項期限內完成經許可之項目時,應於期限屆滿十五日前,以書面敘明理由,向原許可機關申請許可展延,最長二個月,並以三次為限;原許可機關受理申請後,依第五條規定辦理。

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