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About product and suppliers:
        Alibaba.com offers 3,506 screw bolt making machine products. About 43% of these are thread rolling machines, 19% are other metal & metallurgy machinery, and 2% are plastic extruders. 

A wide variety of screw bolt making machine options are available to you, such as free samples. 

There are 3,517 screw bolt making machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of screw bolt making machine respectively. 

Screw bolt making machine products are most popular in Southeast Asia, Mid East, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,235 with ISO9001, 112 with Other, and 31 with ISO14001 certification.