What level unit is China National Institute of Standardization?

China National Institute of Standardization is a public institution directly under the General Administration of Quality Supervision, Inspection and Quarantine, and a national-level public welfare scientific research institution engaged in standardization research in China. China National Institute of Standardization mainly studies the overall, strategic and comprehensive standardization issues in China's national economic and social development, and conducts research on standardization development strategies, basic theories, principles, methods and standard systems.