(1) VACIS EXAM (basic inspection): the most basic inspection method of the US Customs, requiring the submission of customs clearance-related documents (including customs manifests and clearance documents) for audit, which will generally be completed within 24 hours after the ship has docked at the destination port

(2) CET (machine scanning inspection): X-RAY, generally from the container to the port, the terminal can pick up the container within three to five working days will be completed, the customs will give instructions to release or transfer to manual inspection

(3) Tail Gate (open container inspection): the container in the terminal after accepting the X-ray machine inspection, if the customs officers still have doubts, will open the container seal to push open the door to view inside, but this inspection generally will not completely open the container inside the box, only a simple inspection, if all normal then release, if encountered problems will be upgraded to the last inspection method

(4) MET (manual inspection): This is the most stringent inspection, and needs to be divided into 1/3 unpacking inspection, 1/2 unpacking inspection and Full inspection, it will open all the boxes of goods inside the container and carry out one-to-one inspection, inspection time will also be affected by many different factors, such as whether it is the peak season, whether the goods are involved in the need to provide certification, whether there is sensitive Generally, the results will be available within 5 to 10 working days from the start of the customs inspection.