Basic information of Taiwan NCC certification Is it mandatory: Mandatory Test content: RF Factory inspection: No Local testing: yes Local Representative: Yes Certificate Validity: 5 years Voltage: 110Vac Certification period: 4-5 weeks Taiwan NCC certification label style CC: It is a fixed character code, which is used to distinguish the types of equipment imported by customs declaration. XX: Indicates the certification authority (institution): expressed in English letters. xx: Table year: 2007 is represented by 07, 2008 is represented by 08...and so on. YY: indicates the type of equipment. yyy: table serial number: increasing sequentially from 001-999 each year. Z: table serial number z: table verification method W: checksum