10月13日甲醛与mdi商品比价指数为102.15，较昨日上升了0.97点，较周期内高点111.05点（2019-09-25）下降了8.01%，较2021年02月28日低点47.00点上涨了117.34%。(注：周期指2015-01-01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，当天甲醛参考价为2266.67,自2021/8/16起，59天陆续上涨了71.717%。当天下游商品mdi参考价为23800.00。
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