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Process for producing screws; the process to form a tip of ear of a fastener device self perfuracao; case aperfeicoado to form grooves in ears of screws, self - perfuranApparatus for producing screw autoperfurante tes.
Process for producing screws; the process to form a tip of ear of a fastener device self perfuracao; case aperfeicoado to form grooves in ears of screws, self - perfuranApparatus for producing screw autoperfurante tes.
