BGV 手动真空插板阀 NW50 B90000195 上海赫哲真空设备有限公司

p1Src=//y3.yzimgs.com/uploads/461521/2018320-203030667.jpg?watermark/2/text/5LiK5rW36LWr5ZOy55yf56m66K6-5aSH5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/650/fill/I0E3QTlBOA==/gravity/Center