CNAS stands for the China National Accreditation Service for Conformity Assessment, it is a national accreditation body established and authorized by the State Administration for Market Regulation according to the Regulations of the People's Republic of China on Certification and Accreditation. CNAS is for the unified accreditation of certification bodies, laboratories, inspection bodies, and related institutions.

Obtaining CNAS accreditation means that an institution's experimental animals have been recognized for their quality, safety, and health by a national authoritative. This accreditation can drive the institution to enhance its technical capabilities and managerial standards, thereby improving its operational efficiency and work quality.

CNAS accreditation also enables institutions to gain international recognition, enhancing their competitiveness in the global market and providing opportunities for international development.

Additionally, institutions can utilize the CNAS National Laboratory Accreditation Mark and the ILAC Recognition Arrangement Mark within the scope of accreditation.