Regulations Governing the Management of Import/Export Clearance for Transportation means Article 71

The captain of an import aircraft or the air carrier shall submit import cargo manifest to the Customs in accordance with the following regulations:1. Within 2 hours before the arrival at the domestic airport, in case where the journey after aircraft’s take-off from the last on- and off-loading airport in foreign country is more than 4 hours;2. Before the arrival at the domestic airport, in case where the journey after aircraft’s take-off from the last on- and off-loading airport in foreign country is equal to or less than 4 hours.The airports (International Air Transport Association Airport Code) prescribed in the second subparagraph in the preceding paragraph shall be announced by Customs Administration.Directions relating to the scope, implementation stages, or grace period etc., for the first paragraph shall be announced by Customs Administration.When transmitting manifest, the captains or the carriers are not required to submit manifest in writing unless receiving written notification from Customs.An import cargo manifest which includes consolidated shipment cargo can be filed by air forwarders, while the said consolidated shipment cargo shall be specified a house manifest with identical format to import cargo manifest shall also be declared.After an aircraft has arrived at a domestic airport, the captain or the carrier shall produce and sign the following documents and submit to the Customs for declaration:1. Arrival and transit passenger manifest;2. Arrival and onboard service crew manifest; and3. Unloading list with items’ material number or name and quantity of unsold tax-free merchandises, including tobacco and alcoholic drinks. If the unloaded items are sealed in the airplane trolleys and need no replenishment, the seal numbers could be declared to the customs instead of the list.When an aircraft has arrived, the captain or the carrier shall prepare and sign the following documents for customs inspection:1. Transit cargo manifest.2. List of posts.Online declaration for arrival and transit passenger manifest should be transmitted to the Customs before take-off. The implementation date shall be separately announced by Customs Administration.
中文原文 運輸工具進出口通關管理辦法第71條
飛機之機長或飛機所屬運輸業者,應依下列規定向海關申報進口貨物艙單:
一、飛機自國外最後裝卸貨機場起飛後至抵達本國機場之航程大於四小時者,應於飛機抵達本國機場前二小時完成申報。
二、飛機自國外最後裝卸貨機場起飛後至抵達本國機場之航程小於或等於四小時者,應於飛機抵達本國機場前完成申報。
前項第二款規定航程小於或等於四小時之國外機場地點名稱,由關務署公告之。
第一項規定之適用態樣、執行階段或寬限期等相關作業事項,由關務署公告之。
機長或飛機所屬運輸業者以電腦連線方式申報貨物艙單者,得免送書面文件。
但海關於必要時,得要求提供書面文件,機長或飛機所屬運輸業者應即配合辦理。
進口貨物艙單所列貨物,含有併裝貨物者,除得由空運承攬業者申報外,應在艙單上註明併裝貨物,並須申報分艙單,其申報內容同進口貨物艙單。
飛機抵達本國機場後,機長或飛機所屬運輸業者應檢具下列經其簽章之文件向海關申報:
一、入境及過境旅客名單。
二、入境隨機服務人員名單。
三、自機上卸載尚未販售之商品(含菸酒)清單明細(含料號或品名及數量)。
但無整補需求而以封條加封商品者,得申報封條號碼代替之。
飛機抵達本國機場後,機長或飛機所屬運輸業者應檢具下列經其簽章之文件,以備隨時交海關查驗:
一、過境貨物艙單。
二、郵件清單。
連線申報入境及過境旅客名單者,應於飛機起飛前,將資料傳輸海關;其實施日期,由關務署另行公告之。

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