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ENFI undertakes the design work, with the adoption of typical acid-making process of "gas cleaning by diluted acid scrubbing with adiabatic humidification + double conversion & double absorption", and the design capacity of plant is 310,000t/a (98% concentrated sulfuric acid). The project was successfully put into production in 2009 and the actual production capacity has reached 370,000t/a to 380,000t/a.