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    • Summary:

      Amidstthelookforspringtrack,theearthissatisfiedaura.Andthevalueendoftheyear,lookingbackat2013,thisyearcarriesthehopeofre...

    • Summary:

      nitrilebutadienerubber,Abbreviation:NBR。Asyntheticrubberbythecopolymerizationofbutadieneandacrylonitrileisprepared.Oilre...

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