Information of institutions certified by CMA in Shangrao can be found on the official website of China National Accreditation Committee for Conformity Assessment (CNAS). This is mainly because CNAS is the only authoritative organization in China, which is fully responsible for all kinds of inspection and testing, calibration, testing and qualification certification of testers in People's Republic of China (PRC) (China), as well as the supervision, management, accreditation and registration of institutions accredited by laboratories. At the same time, CNAS accredited instruments and equipment calibration, inspection and testing institutions and personnel certification all declare that they have certain technical capabilities and credibility. MA refers to China Metrology Certification, that is, China Metrology Certification. CMA certification, issued by China National Accreditation Committee for Conformity Assessment (CNAS), is one of the internationally recognized authoritative certifications and the most authoritative and professional certification in the metrology field in China.