PERLITE : Perlite, which means pearl stone, is a glasslike volcanic rock in different colours up to black from tones of grey. Perlite with this condition is named as RAW PERLITE. CLASSIFIED PERLITE is to be sized by passing through different spaced fine sieves after raw perlite is broken in gaps, which are 0,0 - 0,25mm. EXPANDED PERLITE is to be increasing condition up to 35 times as much of grain volume in result of explosion by losing constitution liquid in flame shock in 850-1150°C of classified perlite.

ETIPER : Expanded perlite is to be increasing condition up to 35 times as much of grain volume in result of explosion by losing constitution liquid in flame shock in 850-1150°C of classified perlite. Expanded perlite and commercial name of products, which is got from this, are registered as ETIPER in the name of ETIHOLDING.

INPER : Expanded perlite is to be increasing condition up to 35 times as much of grain volume in result of explosion by losing constitution liquid in flame shock in 850-1150°C of classified perlite. Name of other a firm, which perlite is produced, is INPER PERLITE .