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About product and suppliers:
        Alibaba.com offers 43,561 helical gear products. About 17% of these are gearboxes, 5% are spur gears, and 4% are other gears. 

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

There are 42,977 helical gear suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 97%, 1%, and 1% of helical gear respectively. 

Helical gear products are most popular in Domestic Market, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 17,338 with ISO9001, 3,613 with ISO14001, and 2,946 with Other certification.