精品亚洲成A人片在线观看,久草免费福利资源站在线观看,国产成A人片在线观看视频 亚洲一级a√无码_中文字幕一级片在线_国产精品无码A∨精品_亚洲精品网站在线播放

Feature:
This valve uses the positive and negative pulse power signal control valve to open or close the safe.
Parameters:
1, Media types:Gas, no corrosive gas
2, Working pressure:0-0.01Mpa
3, Medium temperature:0-60℃
4, Nominal diameter:2-25mm
5, Connection:Thread