In international logistics operations, significant differences exist between the customs declaration and release procedures at Shanghai's Yangshan Port and the Outer Port .
At Yangshan Port, the secondary release ("er fang") primarily refers to container clearance. Typically, customs declarations are processed before containers enter the port. This procedure involves submitting declarations and awaiting customs clearance information - containers can only enter the port after receiving release approval.
In contrast, the Outer Port follows an "enter first, declare later" approach. Containers arriving at the Outer Port must complete customs declarations post-entry, with clearance status (including whether inspection is required) typically determined within the same day. Consequently, the Outer Port's process doesn't distinguish between primary and secondary releases, focusing instead on gate release and customs release .
While both ports involve clearance procedures, Yangshan's system requires containers to enter the port first before determining inspection needs, making the secondary release concept particularly important. During consolidated shipping, users should monitor electronic container manifests through tools like Container Shipping Guides to track release status promptly.
Additionally, given Yangshan's more complex procedures, shippers must continue monitoring final loading status even after clearance to ensure smooth transportation operations.
