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About product and suppliers:
        Alibaba.com offers 7,436 bicycle stem products. About 18% of these are bicycle stem. 

A wide variety of bicycle stem options are available to you, such as aluminum, carbon fibre, and aluminum alloy. You can also choose from free samples, paid samples. 

There are 7,423 bicycle stem suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Australia, which supply 98%, 1%, and 1% of bicycle stem respectively. 

Bicycle stem products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,380 with ISO9001, 218 with Other, and 35 with ISO/TS16949 certification.