1. Cross-regional: a single window connects entities such as port departments, foreign trade enterprises and logistics enterprises in space, forming a virtual electronic port platform, which is not limited by regions.

2. Cross-industry: a single window connects all industries in the business, including customs clearance, logistics and foreign trade. To realize information sharing and business collaboration among industries.

3. Cross-department: a single window connects all departments in management, including customs, inspection and quarantine, taxation, foreign exchange, etc. To realize information sharing and business collaboration among administrative departments.