10月19日甲醛与mdi商品比价指数为100.32，较昨日下降了3.54点，较周期内高点111.05点（2019-09-25）下降了9.66%，较2021年02月28日低点47.00点上涨了113.45%。(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2100.00。当天下游商品mdi参考价为22460.00,自2021/10/8起，12天陆续下降了5.762%。
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