In January 2006, Sinosteel Luoyang Institute of Refractories Research and Sinosteel Tiancheng Environmental Protection Science & Technology Co., Ltd. were approved as “State Acknowledged Technological Centers”.Besides, Sinosteel Maanshan Institute of Mining Research was approved by the State Administration of Work Security of Class-A Qualification in safe production. There are only 44 enterprises that have been approved to conduct security evaluation in metallic and non-metallic mining and beneficiation, smelting and processing of ferrous and non-ferrous metals and recycle and processing of waste resources and waste materials.