Perlite insulation is a lightweight and versatile material commonly used for thermal insulation purposes. It is made from naturally occurring volcanic glass that is heated and expanded, creating a porous structure. Perlite insulation provides excellent heat resistance, sound absorption, and fire resistance, making it ideal for various construction and industrial applications.
https://amolminechem.com/blog/perlite-insulation/

What is Perlite Insulation? – Perlite Manufacturer in India, Perlite Online India, Perlite India | Amol Minechem Limited