Powder magnesite caustic PMK-75 PMK-83 of GOST 1216-87

Magnesite the caustic PMK-75 brands (content of oxide of magnesium not less than 75%), PMK-83 brand (content of oxide of magnesium not less than 83%).
One of main types of use of magnesite of the caustic (magnesium oxide) as magnesian knitting by production of building materials.