1 Copper Wire No. 1 Copper Wire grade 1: Including No nudity, No coating, No alloy of pure Copper Wire, the surface without oxidation, do not contain the hair silk, Copper Wire diameter not less than 1.6 mm. Level 2: Including clean, no luster, no coating, wuxi, no alloy of pure copper wire and copper cable, do not contain the wool yarn and burnt fragile copper wire. BarleyBerry No. 2 Copper Wire No. 2 Copper Wire without alloy of Copper scrap line, contain sundries, Copper content is 96% (minimum content 94%). Shall not contain too much lead is changed and tin mineralization of copper wire, welding wire, brass and bronze line, excessive oil, iron and steel scrap and nonmetallic, crisp burnt line, do edge sex copper wire and excessive fine silk. Need appropriate means to remove grime. Birch