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Frames in general are all those elements, which are used to cover (close) t..
Insulation is the isolation of a space from liquids, heat or cold, from sou..
Natural gas is a gaseous mixture of saturated hydrocarbons with a small num..
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Energy Systems - Demertzis

Demertzis Company is based in Evia in the city of Chalkida. In our company you will find a wide range of products related to solar heat, LPG, natural gas, heating and air conditioning.

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