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About product and suppliers:
        Alibaba.com offers 334 duplex stud products. About 45% of these are bolts. 

A wide variety of duplex stud options are available to you, such as metal, steel. You can also choose from free samples, paid samples. 

There are 334 duplex stud suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of duplex stud respectively. 

Duplex stud products are most popular in North America, South America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 110 with ISO9001, 70 with ISO14001, and 66 with Other certification.