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About product and suppliers:
        Alibaba.com offers 2,810,657 screw products. About 2% of these are screws, 1% are other solar energy related products, and 1% are bottles. 

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

There are 2,810,473 screw suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of screw respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 985,649 with ISO9001, 480,538 with Other, and 131,335 with ISO14001 certification.