双向硬碰硬蝶阀-双闸板闸阀-气动平行式双闸板闸阀【永一阀门集团】

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永一阀门集团有限公司桥下分公司生产双向硬碰硬蝶阀、双闸板闸阀、平行式双闸板闸阀、气动平行式双闸板闸阀等产品,永一从事阀门的设计、工艺、试验和服务工作,欢迎咨询:0577-67325667

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