P.T.C. System is a newly patented technology in France on 27/07/2018. This patent is also extended on 02/08/2018 worldwide for 152 countries with the purification of gaseous compositions containing pollutants harmful to health and the environment or simply smelly. This innovative technology P.T.C. System falls into two main areas: DAVID Process – Industry & Odors – The treatment of gaseous effluents and GASWASH Process – Sustainable Development – The purification of biogas.