5 DCB TECHNOLOGYPlanning and designPower distribution systemElectric appliancesFrom the perspective of DCB engineering application,the roadmap introduces the technical characteristics,product status and technical maturity of DCB according to three classifications,including planning and design,power distribution system and electric appliances,and gives the corresponding viewpoint of industrialization development. Figure 5-1 shows the main technology category of three classifications and the corresponding technology maturity levels. It can be seen that almost all technologies can be verified by experiments,and most of them can be customized and applied. At the same time,the stability and reliability of its performance are further verified by engineering,and the development of DCB supporting industry is realized.