It is the foundation of the CB system to make the product safety test results of electronic and electrical equipment globally acceptable. After the test is successfully completed, a CB test certificate and corresponding CB test report will be issued for the product. The two documents add up to form a pass. The manufacturer can apply for global certification of any national certification body participating in the CB system country or region, and usually no additional testing is required. In addition, when applying for CB certification, it is necessary to inform the country to be included in the report, so that the corresponding national differences are taken into account during the test.