Description: Treatment of gas; treatment of waste materials; treatment of liquids; gas purification, flue gas condensation and water purification; Construction, contracting, installation, and inspection services regarding plants and machinery for gas purification, flue gas condensation and water purification; Retail services of plastics, particularly for purification of gases and liquids; retail services of tower packings, droplet separators and separation trays for use in purification of gases and liquids; Apparatus and machines for gas purification, flue gas condensation and water purification; heat pumps, scrubbers; filters for gas and water purification; Technical consulting services regarding energy production and recovery in power plants; technical consulting services regarding gas purification, flue gas condensation and water purification; inspection services regarding gas purification, flue gas condensation and water purification; scientific and technical services regarding gas purification, flue gas condensation and water purification; industrial analysis and industrial research and design services regarding gas purification, flue gas condensation and water purification; technical analysis and investigation services regarding gas purification, flue gas condensation and water purification