旋球阀,双向硬碰硬旋球阀,气动/电动偏心半球阀|永嘉阿斯塔自动化仪表有限公司

p1Src=//y1.yzimgs.com/uploads_old/193144/2008092309232101_Old.jpg&p2Src=//y1.yzimgs.com/uploads_old/193144/2008092309232101_Old_1.jpg&p3Src=//y1.yzimgs.com/uploads_old/193144/2008092309232101_Old_2.jpg