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About product and suppliers:
        Alibaba.com offers 4,645 optical fiber diameter products. such as free samples, paid samples. 

There are 4,666 optical fiber diameter suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and Poland, which supply 99%, 1%, and 1% of optical fiber diameter respectively. 

Optical fiber diameter products are most popular in Western Europe, Mid East, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,224 with ISO9001, 499 with ISO14001, and 346 with Other certification.