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About products and suppliers:
Alibaba.com offers 796997 screw products. 

A wide variety of screw  options are available to you,  such as din, iso and gb.You can also choose from general industry, heavy industry and retail industry screw,As well as from steel, stainless steel, and brass.  and whether screw is zinc, zinc plated, or plain. 

There are 800710 screw suppliers, mainly located in Asia. , and