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About product and suppliers:
        Alibaba.com offers 1,473 two headed screws products. About 9% of these are screws, 1% are drywall screws. 

A wide variety of two headed screws options are available to you, such as free samples, paid samples. 

There are 1,471 two headed screws suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United Arab Emirates, which supply 98%, 1%, and 1% of two headed screws respectively. 

Two headed screws products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 350 with ISO9001, 125 with Other, and 18 with ISO14001 certification.