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About product and suppliers:
        Alibaba.com offers 3,516 bolt screw making machine products. About 40% of these are thread rolling machines, 18% are other metal & metallurgy machinery, and 1% are plastic extruders. 

A wide variety of bolt screw making machine options are available to you, such as granules, wire, and pipe. You can also choose from single-screw, double-screw. As well as from pe, pp. And whether bolt screw making machine is free samples. 

There are 3,526 bolt screw making machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of bolt screw making machine respectively. 

Bolt screw 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 1,186 with ISO9001, 225 with Other, and 32 with ISO14001 certification.