All

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 D01 Inorganic Chemicals D007287 +
  D01.303 Fluorine Compounds D017611 +
   D01.303.350 Hydrofluoric Acid D006858 +
    D01.303.350.300 Fluorides D005459 +
     D01.303.350.300.900 Sulfur Hexafluoride D013459 
 D01 Inorganic Chemicals D007287 +
  D01.362 Gases D005740 +
   D01.362.820 Sulfur Hexafluoride D013459 
 D01 Inorganic Chemicals D007287 +
  D01.875 Sulfur Compounds D013457 +
   D01.875.812 Sulfur Hexafluoride D013459