美股周五早盘，航空材料供应商帕克航空航天（Park Aerospace，PKE）股价上涨1.7%，此前该公司宣布投入4000-4500万美元扩建设施以满足国防需求增长。公司第二季度销售额达1638.1万美元，毛利率31.2%，正持续推进产能扩张以支持业务增长。

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