Regulations Governing Airport Terminal Preparation, Construction, and Operation Article 23

The operator of the airport shall provide customs, immigration, quarantine and security control agencies with free venues and facilities required for their operations.The operator of the airport shall provide the CAA with free venues required for establishment, operations, and maintenance of air traffic services.
中文原文 航空站籌設興建及營運管理辦法第23條
航空站經營人應無償提供海關、移民、檢疫及安檢等機關作業所需之通關場地與貨物及行李檢查所需之設施。
航空站經營人應無償提供民航局飛航服務相關設施、設備之設置、作業及維護所需場地。

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