GSLV C25 was tested for full 10 minutes at ISRO’s Liquid Propulsion Complex located at Mahendragiri in Tirunelveli in Tamil Nadu.

• The C25 stage is the most powerful upper stage so far developed by ISRO.
• It uses Liquid Oxygen and Liquid Hydrogen propellant combination stored at minus 253 degree Celsius.
• GSLV MKIII will enable ISRO to launch 4 ton class satellites in Geosynchronous Transfer Orbit.
• Only Russia, France, US, China, Japan and now India has this technology.