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About product and suppliers:
        Alibaba.com offers 3,210 aluminum valve stem products. About 25% of these are other auto parts, 10% are valves, and 1% are valve stems. 

A wide variety of aluminum valve stem options are available to you, such as ball, gate. You can also choose from oil, water. As well as from free samples, paid samples. 

There are 3,214 aluminum valve stem suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Canada, which supply 99%, 1%, and 1% of aluminum valve stem respectively. 

Aluminum valve stem products are most popular in Western Europe, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 908 with ISO9001, 144 with Other, and 71 with ISO/TS16949 certification.