Low smoke zero halogen is a type of material that is used to make things like wires, cables, and pipes. It's called "low smoke" because when it burns, it produces very little smoke. This is important because if there is a fire, the smoke can be dangerous and make it hard to escape.
It's also called "zero halogen" because it doesn't contain any halogen elements like chlorine or bromine. These elements can be harmful to people and the environment if they are released during a fire.
So, low smoke zero halogen materials are safer to use in buildings and other areas where people might be. They are less likely to produce smoke and harmful chemicals if there is a fire.