1. The construction of any building in a free zone shall require the prior approval of the customs authorities.
2. Subject to customs legislation, any industrial, commercial or service activity shall be permitted in a free zone. The carrying on of such activities shall be subject to notification, in advance, to the customs authorities.
3. The customs authorities may impose prohibitions or restrictions on the activities referred to in paragraph 2, having regard to the nature of the goods in question, or the requirements of customs supervision, or security or safety requirements.
4. The customs authorities may prohibit persons who do not provide the necessary assurance of compliance with the customs provisions from carrying on an activity in a free zone.