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China Factory >98% Pentaerythritol Flame Retardant Used in Intumescent Coatings for Steel Wood etc., Pentaerythritol, Mono-Pentaerythritol

China Factory >98% Pentaerythritol Flame Retardant Used in Intumescent Coatings for Steel Wood etc., Pentaerythritol, Mono-Pentaerythritol