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A process for the preparation of a flue sig, for the formation of a foam for a helicoidal guide evaporation of liquids (9) to the surface, in particular fire gefa of honest to liquids, any hindering foam ceiling serves
A process for the preparation of a flue sig, for the formation of a foam for a helicoidal guide evaporation of liquids (9) to the surface, in particular fire gefa of honest to liquids, any hindering foam ceiling serves
