INTERNATIONAL OCCUPATION CERTIFICATION STANDARD LEAGURE  is a world-renowned vocational technical standards certification association, which is established and co-sponsored by many professional practitioners of different industries, such as IT, business, sport, architecture, and mobile communication. Its headquarter office is located in Wilmington, County of New Castle, State of Delaware, United State. IOCL is an authoritative vocational standard organization with professional certification team, advanced test system and strict certification standard.