Home / Standards / HG/T 2274-1995 HG/T 2274-1995 Active 钙镁磷肥用硅镁质半自熔性磷矿石 Standard Type HG ICS N/A CCS N/A Status Active Issue Date 1995-04-02 Implementation 1996-01-01 Centralized Committee 化学工业部 Issuing Authority 化学工业部