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About product and suppliers:
        Alibaba.com offers 3,248 screw bolt making machine products. About 35% of these are thread rolling machines, 21% are other metal & metallurgy machinery, and 6% are screws. 

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

There are 3,264 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 Mid East, North America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,222 with ISO9001, 238 with Other, and 49 with ISO14001 certification.