UPPER BLIND LINING; MACHINE: SCHENCK SHEETER MODEL SLK V024 126/127.A01; ACCORDING TO A DRAWING FROM THE BVS-6071 SUPPLIER; FOR DRAWING 1523-12-2221, USE MATERIAL (HARDOX 500) AND THE CUTTING OF THE SIEVE SLOTS SHOULD BE DONE BY WATER CUT - 1523-12-2221 (HARDO X 500)