This product is used for heat insulation or sound proofing of various constructions, machinery insulation. As a heat insulation of tubes or refrigerators and so on. We produce two types of glass wool rolls: 1. Helden M-15 with density of 14 kg/m3; 2. Helden Light with density of 12 kg/m3; This material is: -incombustible, -light weight, -chemically neutral, -cheap, -easily transportable. Glass wool is a well known material in building construction field as a heat insulation material. And so far it is the best choice for this field.