10月31日甲苯与tdi商品比价指数为90.81，与昨日持平，较周期内高点106.80点（2019-09-25）下降了14.97%，较2020年10月08日低点39.98点上涨了127.14%。(注：周期指2012-01-01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，当天甲苯参考价为6770.20。当天下游商品tdi参考价为15500.00,自2021/9/26起，36天陆续上涨了11.511%。
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