Accreditation Service for China Laboratories. China National Accreditation Service for Conformity Assessment (hereinafter referred to as CNAS) is the national accreditation body of China unitarily responsible for the accreditation of certification bodies, laboratories and inspection bodies, which is established under the approval of the Certification and Accreditation Administration of the People?s Republic of China (CNCA) and authorized by CNCA in accordance with the Regulations of the People?s Republic of China on Certification and Accreditation. History CNAS was founded on March 31, 2006 by merging the former China National Accreditation Board for Certifiers (CNAB) and China National Accreditation Board for Laboratories (CNAL). CNAB was the national accreditation body responsible for the accreditation of management system certification bodies and product certification bodies, which was founded in July 2002 by the authorization of CNCA according to relevant laws and regulations. CNAB had merged the former China National Accreditation Council for Registrars (CNACR), China National Accreditation Council for Products (CNACP), China National Accreditation Board for Import & Export Enterprises (CNAB) and former China Accreditation Committee for Environmental Management System Certification Bodies (CACEB). In April 2004, the accreditation functions related to occupational health and safety management system certification bodies and organic product certification bodies of former China National Accreditation Board for OSHMS Certification Bodies (CNASC) and organic food accreditation committee were transferred to CNAB according to the co-decisions of CNCA and relevant competent authorities, which had further advanced the intensive fusion of unified accreditation systems for certification bodies.