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5402.1-2000

po po
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   2009-04-15
   2009-05-01
   2001-06-01
    45%. po a
   Refractory products with a true porosity of less than 45%. Method for determination of permanent change in dimensions on heating
    a po ( po) 45% a .
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 5402.1-2000 5402.1-2000