The method according to the invention allows an increase in total yield of phthalic anhydride without any or without substantial decrease in product quality.
本发明方法可提高邻苯二甲酸 酐总体收率而不会降低或不会显著降低产品质量。
The method according to the invention allows an increase in total yield of phthalic anhydride without any or without substantial decrease in product quality.
本发明方法可提高邻苯二甲酸 酐总体收率而不会降低或不会显著降低产品质量。
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