Any country desiring to participate in the work of the IEC shall form a Electrotechnical Committee for its own country, this Committee is called National Committee. There shall be only one National Committee for each country. Full membership gives the possibility of fully participating in international standardization activities.
Associate membership allows for limited participation of countries with limited resources.
In addition, a Pre-Associate membership status provides countries with support in forming a national electrotechnical committee, with the aim of becoming Associate members. The committees prepare technical documents which are then submitted to IEC s members for voting with a view to their approval as international standards. The national policy concerning the activities of the IEC shall be determined by The Thai National Committee for IEC establishing under the Cabinet resolution.