In the shipping industry, container prefixes are a series of letters that are used to identify the type of container being used to transport cargo. These prefixes are typically four letters long and are assigned by the International Organization for Standardization (ISO). There are many different types of containers used in the shipping industry, including dry containers, refrigerated containers, and tank containers. Each type of container has a unique prefix that is used to identify it.

For example, the prefix for a 20-foot dry container is "CSCU," while the prefix for a 40-foot refrigera

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