All non-metals are poor conductors of electricity.
According to the conductivity of electricity, materials are of two types-
Conductor- A substance or material that allows electricity to pass through it, is called a conductor. Example - Silver, copper, etc.
Non-conductor/Insulator - A substance or material that does not allow electricity to pass through it, is called a non-conductor or insulator. Example - Wood, plastic, etc.
Therefore, the given statement is true.