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About product and suppliers:
        Alibaba.com offers 9,200 gear ratios products. About 24% of these are speed reducers, 17% are gearboxes, and 5% are ac motor. 

A wide variety of gear ratios options are available to you, such as worm, planetary, and helical. You can also choose from free samples, paid samples. 

There are 9,200 gear ratios suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of gear ratios respectively. 

Gear ratios products are most popular in Mid East, Southeast Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 3,128 with ISO9001, 1,076 with Other, and 604 with ISO14001 certification.