Cooperation. V/O Izotop (part of Rosatom) shipped the first batch of cobalt-60 sources to China to be used at local irradiation facilities. The first shipment will pave the way for long-term supplies of these products. Cobalt-60 is one of the most widely used gamma emitters. Sealed radioactive sources with this isotope are employed to sterilize food products, medical instruments and materials, treat and disinfect industrial waste, modify polymers, etc. V/O Izotop supplies its products to over 170 companies in 50 countries and more than 600 companies in Russia. Medical isotopes produced by Rosatom enable about 2.5 million diagnostic and therapeutic procedures to be performed in Russia and abroad.