Petroleum Resin of Thermal Polymerization|Petroleum Resin of Cold Polymerization ,Tar resin ,Fumaric Acid ,L-Aspartic Acid ,Aromatic Hydrocarbon of C10 Fraction|Petroleum Naphthalene|Raffinate of C10 Fraction|Heat Transfer Medium of C10 Fraction |Heav----Shandong Qilong chemical Co., ltd.
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