Russia
– JSC “Russian Institute of Radionavigation and Time”, St. Petersburg
– JSC “Academician M.F. Reshetnev “Information Satellite Systems”, Krasnoyarsk
– Russian space systems, Moscow
– Preciese Systems Instrumentation Technology, Moscow
– Russian Institute of Space Device Engineering, Moscow
– Navigation systems Navis Inc., Moscow
– FSUE “National Research Institute for Physicotechnical and Radio Engineering Measurements”, Mendeleevo, Moscow region
– Institute of Applied Astronomy, St. Petersburg
– Lebedev Physical of Russian Academy of Sciences Astro Space Center, Moscow
– Mission Control Centre “TSNIIMASH”, Korolev, Mosckow region
– Siberian Federal University, Krasnoyarsk
– “NPP Radiosvyaz”, Krasnoyarsk
– Russian Federal Space Agency (ROSCOSMOS), Moscow
– JSC «Company TransTeleCom», Moscow
– Svyaztransneft, Moscow
– Rostelecom, Moscow
– MACOMNET telecommunications company, Moscow
– COMSTAR – United TeleSystems, Moscow
– TRK “TVT”, Kazan
– Bashtel, Ufa
– Bashkirenergo, Ufa
Belarus
– Byelorussian National Institute of metrology (BelGim)
Kazakhstan
– Kazakhstan Institute of Metrology RSE “KazInMetr”
Australia
– Commonwealth Scientific and Industrial Research Organization, Australia Telescope National Facility (CSIRO ATNF) Sydney, NSW
– University of Tasmania Sandy Bay in Tasmania
Belgium
– GILLAM-FEi Frequency, Electronics&Telecommunications, 4000, Liege
– Royal Obsevatory of Belgium
Canada
– National Research Council Canada
China
– National Institute of Metrology (NIM), Beijing
– Beijing Institute of Radio Measurements and Metrology (BIRMM), Beijing
– Chinese Academy of Space Technics, Beijing
– Shanghai Astronomical Observatory (SAO), Chinese Academy of Science, Shanghai
– Shanghai Institute of Optics and Precise Mechanics, Chinese Academy od Science, Shanghai
– Harbin Polytechnic University, Harbin
– National Institute of Metrology Technology Inc.
– Beijing Weiye Yuanguan Technology&Trading Co., Ltd
– Heritek Electronics (China) Co., Ltd, Shenzhen
– Huawei Technologies Co., Ltd, China
– EZ TECH Electronics Co. Ltd, Suzhou
– Shanghai Eastern Scien-Tech Machinery Imp&Exp Ltd.
– Beijing Orient Institute of Measurement and Test, Beijing
– Beijing GenWangXinMao, Beijing
– National Time Service Center (NTSC)
France
– Centre national d’études spatiales
– LNE-SYRTE, Observatoire de Paris
– Muquans Institut d’Optique d’Aquitaine
Germany
– Physikalish-Technische Bundesanstalt (PTB), Braunschweig
– TimeTech GMBH, Stuttgard
– Institute of Experimental Physics, Heinrich-Heine University, Duesseldorf
– Max-Plank-lnstitute fur Radioastronomie, Bonn
– ASTRIUM GmbH, Munich
Great Britain
– GMV Innovating Solutions, London
Hong Kong
– Standards and Calibration Laboratory
– JT DEVELOPMENT Ltd., HONGKONG
India
– ISRO Telemetry, Tracking and Command Network (ISTRAC)
– NPL – CSIR-National Physical Laboratory
– Space Applications Centre (SAC)
– Bharat Electronics Limited
Israel
– The Hebrew University of Jerusalem
Italy
– Galileo Avionica S.p.A., Milan
– REGAL di Pozzetti Renzo, Milan
– SINCRON S.R.L, Via A. Moro
– E-GEOS, Contrada Terlecchie, Matera
Japan
– National Institute of Advanced Industrial Science and Technology
– Geospatial Information Authority of Japan (GSI)
Korea
– Korea Astronomy and Space Science Institute (KASI)
– National Geographic Information Institute
Poland
Spain
Switzerland
– T4Science SA, Neuchatel
– Orolia SA, Neuchatel
– Oscilloquartz SA, Neuchatel
