Chandrayaan-1 and RADOM-7
I'm Svetlio, from Bulgaria. You probably know that Chandrayaan-1 carries several instrument from other agencies, including SRI-BAS. RADOM-7 is a radiation dose monitor. The instrument, built in Bulgaria, is smaller than a pen, but very important. Its results will be very helpful someday when we start building lunar stations.
RADOM-7 will replace the older monitors like Lulin, which were successfully used on other Soviet and Russian projects, like Mir.