The GS1 Global Product Classification (GPC) standard helps global trading partners to group products in the same way, everywhere in the world. The resulting common business language is clear and instantly understandable.
The building block of GPC is a product code known as a brick. There are bricks for everything from a car to a bottle of milk. The highest level of the classification is a segment, which is defined as a particular industry. For example, a bottle of milk belongs to the food, beverages and tobacco segment.
The lowest level of the classification system is called a brick attribute which is defined as a particular product detail. For example, you can specify whether milk contains animal milk (cow, goat, etc.) or non-animal milk (soy, rice, etc.).