... grade 1: including No nudity , No coating, No alloy of pure Copper Wire, the surface without oxidation, do not contain the hair ... clean, no luster, no coating, wuxi, no alloy of pure copper wire and copper cable, do not contain the wool yarn and burnt ... waste production with copperspecification:Copper WIRE SCRAP, (Millberry) 99.78% at a purity of 99.78% min. 99.78%Max. COPPER: 99, 9% CARBON: 0.03% ...