Einstein Probe is an international mission by the Chinese Academy of Sciences in collaboration with the European Space Agency (ESA) and the Max-Planck-Institute for extraterrestrial Physics (MPE), Germany. 

ESA contributes to 

     (1) the building of the FXT via provision of the Mirror Assembly and the Electron Diverter

     (2) support in the testing and calibration of the detectors and optical elements of the WXT

     (3) support to the data download from the EP spacecraft through ESA’s Ground Stations

MPE contributes to the building of the FXT via provision of the eROSITA design information and use of the mandrels, Mirror Demonstrator Model, possibly the eROSITA Mirror Flight Spare, and a number of detector modules plus CAMEX test module 


Other potential collaboration under negotiation:

   CNES, France, via provision of the VHF network for real time alert data downlink