Open junction box is a new wiring mode developed by our company. It is easy to operate and beautiful to manage wires. It can take into account 63A current at most. It has transparent cover. It is easier to inspect manually. The link bridge board is silver plated. The standard configuration of link bridge board with flow rate of 80A solves the problems of high cost, long time and low efficiency brought by customization. The overall structure is beautiful and generous.