In principle, application unit shall be defined according to different product families, models /types, specifications, working principles, constructions in terms of product safety, the components having significant influence on EMC performance.

• 原则上按产品品种、型式、规格、工作原理、安全结构、对产品电磁兼容性能有重要影响的零部件的不同划分申请单元。