On Feb. 28, the gas desulfurization system of 3# sintering machine and the associated 3# acid making system commissioned in Hyundai Steel Co., Korea. The renovation work is undertaken by NERIN. The system has run smoothly for a week, producing 12~15t acid (95%~98%) per day. The system, featured by stable operation and high efficiency, meets the SO2 40mg/Nm3 emission criteria of Hyundai Steel Co. This Project has gained high praise and recognition of Hyundai Steel Co. and Taeil Co., Korea.