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About product and suppliers:
        Alibaba.com offers 2,696 screw bolt making machine products. About 33% of these are thread rolling machines, 23% are other metal & metallurgy machinery, and 10% are bolts. 

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

There are 2,706 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, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,219 with ISO9001, 231 with Other, and 53 with ISO14001 certification.