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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(dòng)效率,較小的尺寸,較低的噪音,運(yùn)營成本低。
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