... ingot 3.Promptly shipment+Best service 4.Usage:casting 5.Copper Color: Golden yellow. Package: 20kg/ an ingot, in bundles of ... , machinofacture, building industry, defense industry, electronic industry, a variety of copper valve, water meter, and shipping. Grade: 4N Grade, 99.99 ... order. 4N 5N 6N * ≤ 100ppm ≤ 10ppm ≤ 1ppm GDMS High Purity Copper Ingot Grade: 4N Grade, 99.99% minimum purity 5N Grade ...