亚洲国产成人精品女人久久久_欧美成人精品高清在线观看_亚洲熟妇AV日韩熟妇在线_少妇精品无码一区二区三区,最新免费国产无码_久久精品综合精品_国内精品久久久久国产_无码专区一va亚洲天堂,91人妻人人澡人人爽人人精品 ,一级特黄AAA大片在线观看_国产一级a毛一级a看免费视频_一级a性色生活片久久无少妇一级婬片免费放_免费无码婬片AAAA片直播_真人一级毛片_久久久久国产一区二区三区_寡妇高潮一级毛片91免费看｀日韩一区二区 ,国产乱人伦真实精品视频_免费无码成人äV在线播放不卡_äv色综合久久天堂äv色综合在线_国产成人综合色视频精品_亚洲vä国产日韩欧美精品

  XZA/HBC series ,the combination of XZA series multi-turn electric actuators and HBC worm speed reducer , was used to control ball valve ,butterfly valve and other part-turn valve actuators.This series actuators have features as firm constructure, multiple standard,large torque rang,stable output and self-locking ability.In order to gear into valve rod,HBC has a involute serration joint.It is easy to test and adjust.