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About product and suppliers:
        Alibaba.com offers 437 back stem products. About 1% of these are other toys & hobbies. 

A wide variety of back stem options are available to you, such as titanium, aluminum, and steel. You can also choose from free samples, paid samples. 

There are 437 back stem suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of back stem respectively. 

Back stem products are most popular in Western Europe, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 145 with ISO9001, 60 with Other, and 25 with ISO14001 certification.