8月17日纯碱与玻璃商品比价指数为48.22，与昨日持平，较周期内高点98.38点（2019-02-17）下降了50.99%，较2020年12月28日低点40.57点上涨了18.86%。(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，当天纯碱参考价为2187.50,自2020/7/8起，406天陆续上涨了74.071%。当天下游商品玻璃参考价为38.62,自2021/8/2起，16天陆续下降了0.078%。
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