Pure Copper 99.999% Rods C12200, C90500, CuZn40Pb2 High-Conductivity Bars Discover premium pure copper bars (99.999% Cu) and brass rods including C12200, C90500, C90700, and CuZn40Pb2 grades for high-performance electrical and industrial applications. Manufactured by MAXI in Jiangsu, China, these copper and brass bars offer exceptional electrical conductivity (99.9% Cu), excellent thermal dissipation, and superior corrosion resistance. Key Features99.999% pure copper bars