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About product and suppliers:
        Alibaba.com offers 10,508 knee machine products. About 21% of these are physical therapy equipments, 5% are massager, and 3% are sewing machines. 

A wide variety of knee machine options are available to you, such as free samples, paid samples. 

There are 10,508 knee machine suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of knee machine respectively. 

Knee machine products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,948 with ISO9001, 1,104 with ISO13485, and 793 with Other certification.