EAF-80t and LF-80t designed, manufactured and supplied by TYMEC for one steel plant in Cangzhou, Hebei province, northeast China had been put into operation after successful commissioning and acceptance. The latest technology has been adopted for the equipment and auxiliary systems, which achieves the target of low energy consumption and high productivity utmost. The establishment period for the project is short, the mechanical and technical as well as other staff from each department of the company cooperate with each other activate to contribute to the successful operation of the equipment.