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About product and suppliers:
        Alibaba.com offers 542,484 screw machine products. About 3% of these are plastic extruders, 1% are capping machines, and 1% are other metal & metallurgy machinery. 

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

There are 541,440 screw machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of screw machine respectively. 

Screw machine products are most popular in Domestic Market, Southeast Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 142,159 with ISO9001, 92,546 with Other, and 15,172 with ISO14001 certification.