All

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 D01 Inorganic Chemicals D007287 +
  D01.485 Iron Compounds D017614 +
   D01.485.910 Steel D013232 +
    D01.485.910.900 Stainless Steel D013193 
 D01 Inorganic Chemicals D007287 +
  D01.552 Metals D008670 +
   D01.552.033 Alloys D000497 +
    D01.552.033.847 Steel D013232 +
     D01.552.033.847.681 Stainless Steel D013193 
 D25 Biomedical and Dental Materials D001697 +
  D25.058 Alloys D000497 +
   D25.058.807 Steel D013232 +
    D25.058.807.681 Stainless Steel D013193