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About product and suppliers:
        Alibaba.com offers 789 4 mm fiberglass rod products. About 73% of these are other fiberglass products, 2% are insulation materials & elements, and 2% are fishing rods. 

A wide variety of 4 mm fiberglass rod options are available to you, such as free samples, paid samples. 

There are 789 4 mm fiberglass rod suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 4 mm fiberglass rod respectively. 

 mm fiberglass rod products are most popular in North America, Western Europe, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 243 with ISO9001, 107 with ISO14001, and 36 with Other certification.