The steel structure for No.4 Building with capacity of 28T of Electrolysis Aluminium was produced and processed on site in 2003 by JME. The span of the house frame is 24m and the pillar height 18m . As the production requires high quality and short time limit, after gaining the contract, we immediately organized the construction workers to live and eat on site under such a poor construction condition, and tried our best to overcome all the difficulties, finally fulfilled the production in time and ensured the quality. The steel structure team of JME has been awarded the title of "Excellent Group at 100-day Battle " issued by Shanxi Huaze Aluminium Co. Ltd.