Type of Patent:发明
State of Patent:已失效
Authorization number:200910184596.4
Service Invention or Not:no
Application Date:2009-08-31
Authorization Date:2011-12-21
Pre One:一种钢液深脱硫、终脱氧和调质用铝钙镁铈复合合金
Next One:一种钢液脱砷熔剂及制备方法和使用方法
The Last Update Time:..