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美国今年丙烯库存最低水平是在一个月前创下的，当时截至8月9日的一周，丙烯库存下降到了388.5万桶。
上周美国非燃料丙烯库存环比减少了10.1万桶，但仍比去年同期增加了125.5万桶。与此同时，炼厂开工率略有增加，为95.1%，环比上升了0.3%。
一位消息人士将美国上周丙烯库存下降归因于丙烷脱氢问题。陶氏化学公司位于得克萨斯州自由港的丙烷脱氢(PDH)装置在9月初停产检修。消息人士称，PDH装置料将停产30-60天。
