Pyongyang, November 24 (KCNA) -- According to Rodong Sinmun, a unit of the DPRK developed building materials for finishing decoration of the interior of buildings with expansion vermiculite.

The building materials purify the air in room by accumulating anion from the nature of vermiculite and have the strong function of thermal insulation and thermal reflection and the soundproof effect.

Their practicality and value are very high as they do not need hydraulic moulding machines and other equipment at all and the decoration in relief can be made only with expansion vermiculite and adhesive.

They are very popular in various units and families. -0-