Answer: Indian Space Research Organisation (ISRO)
Notes: ISRO recently conducted a successful hot test on the semi-cryogenic engine (SE2000), advancing towards finalizing the cryogenic stage. The semi-cryogenic engine (SCE) uses liquid oxygen (LOX) as an oxidizer and refined kerosene (RP-1) as fuel. ISRO is developing the 2000 kN thrust SCE for future heavy-lift launch vehicles. Kerosene is more cost-effective and easier to handle than liquid hydrogen, simplifying storage and reducing mission costs. The engine will enhance ISRO’s launch vehicle payload capacity and is planned for use in the Next Generation Launch Vehicle (NGLV).
