Copper foil, a conductive shielding material, is mainly used for fine electronic products, computer equipment, wires, cables, etc. at the joints of central air conditioning pipes, smoking machines, refrigerators, water heaters and other pipes in the peripheral wires and transformers of computer displays; When performing high frequency transmission, it can isolate electromagnetic wave interference, avoid high temperature ignition (0.018 mm-0.05 mm), and randomly divide different thickness and width. Copper foil tape is divided into single-sided coating and double-sided coating. Single plastic copper tape is divided into single-guide copper tape and double-guide copper tape. In other words, the single-guided copper foil tape is called single-sided conductive, because the coating surface is not conductive, as long as the other side is conductive. Copper foil tape is conductive on the coating surface, and other copper itself is conductive, so the two sides are conductive.