What is the difference between "red channel" and "green channel" in airport and customs?

articles that need to be declared to the customs should go through the "red channel", and articles that are not declared to the customs should go through the "green channel".

The items that need to be declared to the customs for entry and exit are as follows:

1. After the implementation of the new entry and exit passenger declaration system, inbound passengers who carry the following items must fill out the Entry and Exit Passenger Baggage Declaration Form and choose the "declaration channel" for customs clearance:

1. Animals and plants and their products, microorganisms, biological products, human tissues and blood products;

2. resident tourists obtain articles for their own use with a total value exceeding 5, yuan (including 5, yuan, the same below) abroad;

3. Articles with a total value exceeding RMB 2, that non-resident travelers intend to stay in China;

4. More than 1,5 ml of alcoholic beverages, or more than 4 cigarettes, or more than 1 cigars, or more than 5 grams of cut tobacco;

5. RMB cash exceeding 2, yuan, or foreign currency cash equivalent to more than 5, US dollars;

6. Separate transport luggage, goods, samples and advertising products;

7. other items that need to be declared to the customs.

2. After the implementation of the new declaration system for inbound and outbound passengers, if outbound passengers carry the following items, they must fill out the Declaration Form for Inbound and Outbound Passengers' Baggage and choose the "declaration channel" to go through customs:

1. Precious metals such as cultural relics, endangered animals and plants and their products, biological species resources, gold and silver;

2. Resident passengers carry cameras, camcorders, laptops and other articles for their own use that need to be brought back into the country.

3. RMB cash exceeding 2, yuan, or foreign currency cash equivalent to more than 5, US dollars;

4. Goods, samples and advertisements;

5. other items that need to be declared to the customs.