For the past decades, NIM has maintained close ties with many international organizations and has always been an active part in activities of world metrological community. NIM is a member of all the 10 CIPM/CCs and all the 11 APMP/TCs, APMP Developing Economy Committee (DEC) and the ad-hoc Working Group for Material Metrology (WGMM). NIM also holds the membership of ISO/REMCO, CITAC, COMAR, and maintains very close relations with OIML, IMEKO, ISO, IEC, etc. Dr. Tong Guangqiu, Director General of NIM, is now a member of the Executive Committee of APMP, and Mr. Yu Yadong, Deputy Director General, acts as the chairman of TCQM.In Oct 2004, the 20th APMP General Assembly and related activities were held in Beijing, and NIM served as the organizer for the whole event.

NIM also maintains sound cooperative relations with NMIs worldwide. Bilateral cooperation activities such as the technical and personnel exchange are prosperous. In order to provide technical assistance to NMIs in developing economies, NIM has held 11 metrological training workshops for developing countries from 1994 to 2004, an Advanced Training Workshop for ASEAN Officials in 2005, and a Seminar on Metrology for Officials of Developing Countries in 2006.