Laminated busbars refer to those used for the connection and wiring of different phase sequences and circuits in the power supply system. Their surface and interlayers are usually insulated, and their main function is to serve as conductors. In electrical cabinets, they are mainly used as copper or aluminum busbars to connect various switches in the power cabinet and switches in each branch circuit. In various equipment, busbars play a very critical role, providing electrical energy and electrical signals for the equipment to realize the normal operation of the equipment. Busbars also have high current-carrying capacity, stability and reliability, which can meet the needs of different equipment.