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About product and suppliers:
        Alibaba.com offers 10,731 knee machine products. About 19% of these are physical therapy equipments, 1% are pantyhose / tights. 

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

There are 10,731 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 South America. 

You can ensure product safety by selecting from certified suppliers, including 2,175 with ISO9001, 1,093 with ISO13485, and 750 with Other certification.