China Compulsory Certificate was created in 2002.

It is not compulsory, but you will get a certificate.

Hologram of the University concerned is compulsory on an original degree certificate,because it proves its authenticity and and helps in preventing duplicity and/or fake racketeers to issue certificates against consideration.

Junior Certificate Foundation is my understanding of the abbreviation. Maths, English and Irish compulsory. Irish can be avoided under certain circumstances.

That is the certificate issued to ensure the conformity of product with relevant specifications. when exporting products from China, most of the consignments carry this certificate.