Oxide

Used as a heat conductor and insulator for power.
Overview

The in-game 
- Chemical formula: BeO.
- Appearance in reality: a white solid known as beryllia.
- Key physical properties: strong electrical insulation combined with high thermal conductivity relative to many other insulating ceramics.
- Common real-world use: insulating components where heat must be conducted away from sensitive parts while preventing electrical current flow; used in certain electronic and thermal-management applications.
Because the cited sources derive the connection from 


Official description
Used as a heat conductor and insulator for power.