8月17日纯苯与丁酮商品比价指数为69.66，与昨日持平，较周期内高点112.52点（2017-02-08）下降了38.09%，较2020年03月31日低点34.25点上涨了103.39%。(注：周期指2013-01-01至今)
注：本站定义，比价指数为周期内上下游商品每日价格之比的定基指数化结果。
据本站数据，当天纯苯参考价为7550.00。当天下游商品丁酮参考价为9533.33。
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