China National Accreditation Board for Laboratories

CNAs is the symbol of national laboratory. With this mark, it indicates that the inspection institution has passed the assessment of China National Laboratory Certification Committee, and the inspection ability has reached the national level laboratory level (CMA and cal only indicate that it has passed the assessment and recognition of provincial quality and technology management institutions. According to the relevant agreements of China's accession to the WTO, CNAs marks can be mutually recognized internationally, for example, by the United States, Japan, France, Germany, Britain and other countries.