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About product and suppliers:
        Alibaba.com offers 4,261 optical fiber diameter products. such as free samples, paid samples. 

There are 4,281 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 Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,110 with ISO9001, 328 with Other, and 228 with ISO14001 certification.