GRSE, BDL and MIDHANI are acronyms of:

GRSE (Garden Reach Shipbuilders and Engineers), BDL (Bharat Dynamics Limited), and MIDHANI (Mishra Dhatu Nigam Limited) are prominent Defence Public Sector Undertakings (DPSUs) under the Ministry of Defence [2]. GRSE is a leading shipyard that builds warships and vessels for the Indian Navy and Coast Guard. BDL is a premier manufacturer of guided missile systems and allied defence equipment for the Indian Armed Forces. MIDHANI specializes in the production of advanced alloys and strategic materials required for defence and aerospace applications [4]. These entities are part of the government's strategic industrial base for defence manufacturing, contributing to India's self-reliance in military hardware [1]. While some have undergone partial disinvestment, they remain majority-owned by the Union Government and are classified as Central Public Sector Enterprises (CPSEs) within the defence sector [2].

Sources

1. [1] https://www.pib.gov.in/newsite/PrintRelease.aspx?relid=112086
2. [2] https://www.ddpmod.gov.in/connect/rti/mandatory-disclosures
3. [4] Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 12: Indian Industry > PUBLIC SECTOR UNDERTAKINGS > p. 380