Answer : 1. "Wipro 3D"
Explanation :

Wipro 3D and ISRO have successfully 3D-printed the PS4 rocket engine for the fourth stage of PSLV, marking a significant advancement in space technology. ISRO's Dr V Narayanan praised the achievement. The advanced navigation and control system of the PS4 stage enables precise orbital placement for various satellite missions. The collaboration used design for additive manufacturing (DfAM) and laser powder bed fusion (LPBF) technology, streamlining production and improving structural integrity.