Standards that certain products must comply with to be legal-for-sale. Most such standards are safety related and goods that meet the standards display a compliance mark. The best-known compliance markings include
CE: for European Union Standards;
FCC: U.S. Federal Communication Commission Standards;
CCC: Products for sale in China;
Ek: Products for sale in Korea.
Japan has multiple marks depending on what conformance body tested the product – all include the letters JET.
Companies engaged in international sales of technology products frequently experience problems with complying with the testing regimes required by such standards, usually because not enough time has been allocated for testing and compliance or because substantial modifications have been carried out to the product without considering the possible need for recertification.