1. Container
The so-called container refers to a large loading container with certain strength, rigidity and specifications for turnover. When using containers to transfer goods, you can directly load the goods in the consignor’s warehouse and transport them to the consignee’s warehouse for unloading. When changing vehicles or ships in the middle, there is no need to remove the goods from the box for replacement. According to the types of goods loaded, there are general cargo containers, bulk containers, liquid cargo containers, reefer containers, etc.; according to the manufacturing materials, there are wooden containers, steel containers, aluminum alloy containers, glass fiber reinforced plastic containers, stainless steel containers, etc.; , there are folding containers, fixed containers, etc., and fixed containers can be divided into closed containers, open-top containers, pallet containers, etc.; according to the total weight, there are 30-ton containers, 20-ton containers, 10-ton containers, 5 ton container, 2.5 ton container, etc.

2. Outer dimensions of the container
The maximum dimensions of length, width and height outside the container, including the container’s permanent attachments. It is the main parameter to determine whether the container can be exchanged between ships, chassis cars, wagons, railway vehicles. It is an important technical information that all transportation departments must master.

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3. Dimensions inside the container
The maximum length, width and height dimensions inside the container. The height is the distance from the bottom surface of the box to the bottom of the box top plate, the width is the distance between the two inner lining plates, and the length is the distance between the inner plate of the box door and the inner lining plate of the end wall. It determines the inner volume of the container and the maximum size of the cargo in the box.
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4. Inner volume of container
The loading volume calculated according to the internal dimensions of the container. Containers of the same specification have slightly different internal volumes due to different structures and manufacturing materials. The internal volume of the container is an important technical information that the material department or other packers must master.​​

5. Container unit of calculation
Also known as the 20-foot conversion unit, it is the conversion unit for calculating the number of containers. At present, most of the container transportation in various countries uses two types of containers, 20 feet and 40 feet long. In order to unify the calculation of the number of containers, the 20-foot container is used as one calculation unit, and the 40-foot container is used as two calculation units to facilitate the unified calculation of the operating volume of the container.
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6. Container leasing
That is, a business in which the owner rents empty boxes to users. The owner of the container is the leasing party of the container, and the user, usually the shipping company or the owner, is the leasing party, and both parties sign a lease contract. Qualified containers are provided by the lessor and handed over to the lessee for use within the agreed scope. There are many different ways of container leasing in the world, which can be summarized as: voyage leasing, time leasing, current leasing and in-flight blocking leasing.