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About product and suppliers:
        Alibaba.com offers 16,096 copper machine screw products. About 19% of these are screws. 

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

There are 16,136 copper machine screw suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 97%, 2%, and 1% of copper machine screw respectively. 

Copper machine screw products are most popular in North America, Domestic Market, and South America. 

You can ensure product safety by selecting from certified suppliers, including 9,941 with ISO9001, 2,667 with Other, and 1,287 with ISO14001 certification.