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About product and suppliers:
        Alibaba.com offers 70,369 aluminium diameter products. such as free samples, paid samples. 

There are 70,112 aluminium diameter suppliers, mainly located in Asia. The top supplying countries or regions are China, Singapore, and Taiwan, China, which supply 98%, 1%, and 1% of aluminium diameter respectively. 

Aluminium diameter products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 25,992 with ISO9001, 8,982 with ISO14001, and 8,640 with Other certification.