五月天色婷婷国产精品_香蕉91成人一区二区三区四区_久久国产亚洲精品超碰热高清_国产精品一区二区手机在线观看

Energy saving elevator

釹鐵硼永磁材料用于電梯拽引機(jī),替代了渦輪蝸桿結(jié)構(gòu),具有更高的驅(qū)動效率,較小的尺寸,較低的噪音,運(yùn)營成本低。
Home | Contact us | E-mail

Copyright © 2001-2020 Zhongmei magnetoelectric Technology (Shanghai) Co., Ltd All Rights Reserved.

Technical support:website