99久久精品费精品国产-玩弄丰满奶水的女邻居-色婷婷欧美在线播放内射-四虎精品成人免费视频-亚洲精品一区国产

Stop valve for rod ammonia

Dateline:2014-11-30    Hits:

Ammonia valve often use the oxygen, nitrogen, hydrogen, argon and other gases.These gases are generally stored in a dedicated high-pressure gas in. Through the use of ammonia valve to make the gas pressure required to experimental range, and then fine-tuning through the other control valves, so that the use of gas input system.The most commonly used valve for ammonia valve, referred to as ammonia valve.

手機網站