Unified numbering system

Okay kiddo, do you know what a numbering system is? It's a way of putting numbers in order, like counting from 1 to 10.

Now, the unified numbering system is a special way of numbering things, but it's not for counting. It's for identifying and organizing different types of metals.

You know how there are different kinds of metals, like gold, silver, and iron? Well, they all have different properties and characteristics. The unified numbering system helps us keep track of all these different types of metals and their characteristics by giving them each a unique number.

For example, iron is given the number 1000 in the system, while aluminum is given the number 4000. This way, if someone needs a specific type of metal for a project or research, they can use the unified numbering system to find the right one easily.

So basically, the unified numbering system is like a special language that metal experts use to identify and organize different types of metals.