Copper products are the general designation of daily and industrial articles processed with pure copper or copper alloy as the main raw materials. Copper is a tough, soft and malleable purple red and shiny metal. One gram of copper can be drawn into a 3000 meter long filament, or pressed into more than 10 square meters of almost transparent copper foil. Pure copper has very high conductivity and thermal conductivity, second only to silver, but copper is much cheaper than silver.