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"" . CARBORUNDUM (): - ; - o, , 115 -1 250 . SCHROEDER (): - , 1 900 ; - (). LUKAS-ERZETT (): - : , , , , , . KENNAMETAL-WIDIA ( WIDIA) STELLRAM (): - , , , . COMBITRADE (): - WIKUS; - KOHNLE. MUELLER DIAMANTMETALL ( ): - .