三通换向阀 粉体专用阀 DN200 上海宣久机械科技有限公司

p1Src=//y1.yzimgs.com/uploads/527244/2020328-1012510.jpg?watermark/2/text/5LiK5rW35a6j5LmF5py65qKw56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/700/fill/I0E3QTlBOA==/gravity/Center