CMES has been active in international activities and has made great achievement during the past decades, establishing working relations with thousands of organizations from 60 countries in research and development, education, designing, manufacturing, consulting and social welfare fields.
On behalf of China, CMES has joined the following 11 international professional organizations:
(1964.07) International Institute of Welding (IIW)
(1979.09) World Foundrymen Organization (WFO)
(1979.11) International Committee for Nondestructive Testing (ICNDT)
(1981.10) International Federation for Heat Treatment and Surface Engineering (IFHTSE)
(1983.12) International Federation for the Promotion of Mechanism and Machine Science (IFToMM)
(1984.09) International Council of Pressure Vessel Technology (ICPVT)
(1985.03) International Tribology Council (ITC)
(1987.04) Asian Pacific Committee on Nondestructive Testing (APCNDT)
(1987.05) International Congress of Mechanical Engineering Societies (ICOMES)
(1993.12) Pacific Ocean Coalition of Welding Association (POCWA)
(1996.05) International Association for Engineering and Food (IAEF)

    CMES has agreement of cooperation with 41 leading professional organizations from 25 countries, with whom CMES has hold various joint-conferences and other technical activities.
（1979）Verein Deutscher Ingenieure
（1980）Institution of Mechanical Engineers
（1980）Deutsche Gesellschaft fuer Zerstoerungsfreie Pruefung e.V.
（1983）Deutscher Verband fuer Schweisstechnik e.V.
（1985）American Society of Mechanical Engineers
（1986）Japan Society of Mechanical Engineers
（1986）Hungarian Scientific Society of Mechanical Engineers
（1986）Society of Manufacturing Engineers
（1987）Verband Deutscher Maschinen und Anlagenbau e.V.Fachgemeinschaft Thermo Prozess und Abfalltechnik
（1987）Polish Society of Mechanical Engineers and Technicians
（1988）Verband Deutscher Maschinen und Anlagenbau e. V.
（1988）Philippine Society of Mechanical Engineers
（1989）Institution of Engineers Pakistan
（1989）American Welding Society
（1991）Russian Society of Mechanical Engineers
（1991）Russian Society for Nondestructive Testing and Technical Diagnostics
（1992）Vietnamese Association of Mechanical Engineering
（1992）Russian Committee of Tribology
（1992）Japanese Society of Tribologists
（1992）Japanese Society for Nondestructive Inspection
（1992）Brazilian Association of Nondestructive Testing
（1993）Society of Mechanical Engineers in Israel
（1993）Korean Society for Nondestructive Testing
（1993）Korean Society of Mechanical Engineers
（1993）Association Francaise De Mecanique
（1994）Singapore Welding Society
（1994）Indian Society for Nondestructive Testing
（1994）Korea Welding Industry Cooperative
（1996）Hellenic Association of Mechanical and Electrical Engineers
（1997）The Institution of Engineers of Ireland
（1997）Institution of Mechanical Engineers, India
（1998）Cyprus Mechanical Engineers Association
（1998）Albanian Society of Mechanical Engineers
（1998）The Institution of Electrical Engineers
（1999）Egyptian Society of Mechanical Engineers
（2000）Canadian Society for Mechanical Engineering
（2001）Japanese Materials Handling Society
（2001）Swedish Society of Mechanical Engineers, Naval Architects & Aeronautical Engineers
（2007）Institution of Engineers, Bangladesh
（2008）Institution of Engineers, Australia
（2008）Japan Industrial Imaging Association
（2008）Society of Operations Engineers