IAF is the abbreviation of International Accreditation Forum. It is a multilateral cooperation organization participated by relevant national accreditation bodies. It was established in January 1993 and has more than 30 members. China National Accreditation Committee for conformity assessment (CNAs) is one of its member units, and China is also one of the 17 sponsors. Its main goal is to coordinate the certification systems of various countries, standardize the qualification requirements of auditors, training standards and the assessment and certification procedures of quality system certification bodies in each member country, so as to make them consistent in technical operation, so as to ensure effective international mutual recognition, They are EAC and PAC.