Let's say you want to build a really cool toy for yourself or your friends to play with. But, to make it work perfectly, you'll need to follow some rules, right? The European Committee for Standardization (CEN) is just like that! They create rules for making things in Europe, so that everything works safely and efficiently.
Imagine that the CEN is like a group of very smart grown-ups. They are making up some important rules that they want everyone in Europe to follow when making things. These rules are called standards. These might include rules for making toys, clothes, machines, buildings or even food!
Once the CEN has made up these standards, everyone in Europe needs to follow them when they are making things. That makes it easier for everyone to know that the things they make or use will be safe and work correctly. It's kind of like a really big game of follow-the-leader, but with grown-ups in charge!
So, in short, the CEN creates rules called standards that help everyone in Europe make things safely and more efficiently.