CNAS .CNAS is China National Accreditation Committee for Conformity Assessment, which means that the organization has passed the certification of China National Accreditation Committee for Conformity Assessment. The "CNAS" seal indicates that the food testing capability and equipment capability of the quality inspection center have passed the certification of China National Accreditation Committee for Conformity Assessment. The inspection report marked with CMA can be used for food inspection, evaluation, judicial expertise, commercial transactions, etc. It has legal effect and is the basis for arbitration and judicial institutions to adopt it.