C9 aromatic petroleum resin was produced with pressure thermal polymerization instead of the catalytic polymerization under low temperature.
用压力热聚合方法代替低温催化聚合生产浅色号c 9石油树脂。
C9 aromatic petroleum resin was produced with pressure thermal polymerization instead of the catalytic polymerization under low temperature.
用压力热聚合方法代替低温催化聚合生产浅色号c 9石油树脂。
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