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To henryconchile: Thanks for your advise, i have tried to contact with those companies that you mentioned and more but they've just given some general answers because the detail information of this...

to Ryan82 and gooser: Thanks for your information, i'm a mechanical engineering student, i have a major project that requires knowledge about technical requirement of the design of a double edge...

Hi all, i have some questions about double edge razor blade. There are 4 elliptical holes on a double edge razor blade, i don't know exactly the effect of them. And would you please tell me where i...