dark marking on paper

La Deuxième Guerre mondiale a commencé lorsque l'Allemagne a envahi le Pologne le 1er septembre 1939

then use these JAM Paper Chartreuse Open End Catalogue Envelopes

and most metal surfaces

l’aquarelle et la peinture acrylique

Norton Sandpaper, Cloth Sheets - Metalite K225, 9" x 11", 100 Grit, Aluminum Oxide, 50 Pack VariesBy:Default dark marking on paperPremium P graded aluminum oxide abrasive. Advanced full resin bond system offers exceptional grain adhesion for longer life. Flexible J wt cotton backing, for superior conformability to complex surfaces and better finishes; Typical Applications. Scouring and light deburring. Scale and rust removal. Blending machine tool marks. Fine sanding and polishing.