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About product and suppliers:
        Alibaba.com offers 68,902 ratio suppliers products. About 4% of these are speed reducers, 4% are gearboxes, and 1% are ac motor. 

A wide variety of ratio suppliers options are available to you, such as worm, planetary, and bevel / miter. You can also choose from free samples, paid samples. 

There are 68,902 ratio suppliers suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of ratio suppliers respectively. 

Ratio suppliers products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 16,371 with ISO9001, 10,418 with Other, and 1,769 with ISO14001 certification.