ATEX is the name commonly given to the two European Directives for controlling explosive atmospheres.

(ATEX Location: Europe)

IECEx is the IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres.

(IECEx Location: International)

NEC article 500 describes the NEC Division classification system, while articles 505 and 506 describe the NEC Zone classification system.

(NEC Location: North America - US).

The Eurasian Conformity mark (ЕАС) is a certification mark to indicate products that conform to all technical regulations of the Eurasian Customs Union.

(EAC Location: Eurasian Customs Union)

The KC (Korea Certification) mark signifies compliance with Korea's product safety requirements for electrical and electronic equipment and is issued by Korea-based certification bodies that have been approved by the Korea Standards Association.