The container plays an irreplaceable role in the sea transportation of large comprehensive goods, except for the main code of the container; Case number or serial number, check number; Container size and type code, in order to facilitate the calculation of the number of containers, a 20 'container can be used as a conversion standard container.

TEU=TWENTY-FOOT EQUIVALENT UNIT 20 'standard container

FEU=FORTY-FOOT EQUIVALENT UNIT

Also marked as follows:

The following is an example of the first group of container labels: For example, COSU8001215

COSU: The main code of the container is represented by 4 Latin letters, the first 3 digits are specified by the container owner and registered with the International Container Bureau, each 4 letters is "U", indicating the maritime container code.

800121: The serial number is the container number. According to the national standard, it is represented by 6 Arabic digits. If there are less than 6 digits, 0 is added.

5: Check number, used for the computer to check the correctness of the main number and serial number records, generally located after the serial number, expressed with 1 Arabic numeral, and added a box to be eye-catching.

The second group of container marks: nationality code + size code + type code

Nationality code: Represented by three Latin letters, indicating the country of registration of the container, such as "RCX" is China.

Size code: A 2-digit Arabic number indicates the size of the container.

Type code: A two-digit Arabic number indicates the type of the container.

Now commonly used expressions are:

20’GP =2210

40’GP = 4310 = 40 8”6

40’HQ = 4510 = 40 9”6 = 40HC

20 'GP (GENERAL PROPOSE CONTAINER) = DRY CARGO CONTAINER

Container Group 3 marks: maximum gross weight and dead weight

MAX GROSS: Also known as rated weight, marked in companies (KG) and pounds (LB).

MAX GROSS = TARE WEIGHT of container + maximum allowable cargo capacity

Example: CCLU6063395/40 'HQ

45G1

MAX.GR 30,480KG

67200 LBS

TARE 3,950KG

8710 LBS

NET 2,6530KG

58490 LBS

CU.CAP 76.2CU.M

2690 CU FT

* * * CU. FT / 35.315 = CU. M * * *