North Third Ring Road East, Chaoyang District. According to Baidu map, the address of China Institute of Metrology is North Third Ring Road/Building KLOC-0/8/Room KLOC-0/3, Chaoyang District, Beijing. China Institute of Metrology was established in 1955, which is under the State Administration of Market Supervision. It is the highest metrological scientific research center in China and the national legal metrological technical institution, and belongs to the social public welfare scientific research unit.