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About product and suppliers:
        Alibaba.com offers 22,255 frequency device products. About 9% of these are multi-functional beauty equipment, 7% are physical therapy equipments, and 1% are navigation & gps. 

A wide variety of frequency device options are available to you, such as multi-function beauty equipment, first-aid devices, and anesthesia equipments & accessories. You can also choose from house-service detector tester, rehabilitation therapy supplies, and massager. As well as from easily assembled, adjustable height. And whether frequency device is automotive, hand held, or mobile phone. 

There are 22,483 frequency device suppliers, mainly located in Asia. The top supplying countries are China (Mainland), South Korea, and Estonia, which supply 98%, 1%, and 1% of frequency device respectively. 

Frequency device products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 6,354 with Other, 5,056 with ISO9001, and 2,470 with ISO13485 certification.