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About product and suppliers:
        Alibaba.com offers 6,354 industry ratio products. About 8% of these are gearboxes, 5% are speed reducers, and 1% are ac motor. 

A wide variety of industry ratio options are available to you, such as worm, planetary, and helical. You can also choose from induction motor, asynchronous motor. As well as from drip-proof, totally enclosed, and waterproof. And whether industry ratio is ccc, or ce. 

There are 6,363 industry ratio suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United States, which supply 97%, 1%, and 1% of industry ratio respectively. 

Industry ratio products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,888 with ISO9001, 686 with Other, and 231 with ISO/TS16949 certification.