Few products have better characteristics of stable construction material, as compared to gypsum board; 90% of the gypsum board contents is gypsum, which is produced by desulfurisation in the TTPs. The carton, used for the sheathing of the board, is made of recycled paper. The technical gypsum is a raw material, well known and used for already a quarter of a century, while the recycled paper has been widely-used for more than 50 years. Natural gas is used as an energy source in the production process and the necessary water is purified and used again. The emissions from the natural gas usage are the lowest possible and the factory in fact releases in the atmosphere only water vapour.