switzer差压开关 3-330-14-1-0 上海航欧机电设备有限公司

p1Src=//y2.yzimgs.com/uploads/175511/202066-104714718.jpg?watermark/2/text/5LiK5rW36Iiq5qyn5py655S16K6-5aSH5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast