The by-product of MaSteel Phase I by ACRE EPC was commissioned on 2019-5-24 successfully. The process is AS, which meet the requirement of 6 coke oven batteries. The capacity of this AS process is 180000Nm3/h, which is the biggest coke oven gas purification unit in China. This successful commissioning presents the strong technical technology of ACRE, and further strength the good relationship with client MaSteel.