VVER-1200 is a flagship nuclear reactor and a core product of ROSATOM's integrated solution. Being an evolution of VVER-1000 reactors that were built in India (Kudankulam) and China (Tianwan) in the 1990s and 2000s, the new design features improved performance across all parameters and a range of additional safety systems preventing radioactive substances from getting out of hermetically sealed containment in cases of emergency.