CB system is a set of global mutual recognition system established by IECEE (International Electrotechnical Commission) to establish , there are 34 countries worldwide and 45 certification bodies to participate in the mutual recognition system, namely IEC accredited laboratories NCB Member States to mutually recognize between inspection reports.

For electrical products manufacturer, in principle, made ​​CB certification and CB certification report can be saved for another time and costs. For example: Get a CB certificate, and then apply for GS, CCEE, BSI certification, in principle, requires only a small amount of additional costs, no additional testing costs can be achieved GS, CCEE, BSI certificate.