| 英文名称: | | alkenes, ethylene-manuf.-byproduct dicyclopentadiene-conc., polymers with malei | | c anhydride, soybean oil and steam-cracked petroleum distillates | | alkenes, ethylene-manuf.-byproductdicyclopentadiene-conc., polymers with maleic anhydride, soybean oiland steam-cracked petroleum distillates |
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