
Andhra Pradesh Power Generation Corporation Limited

Gujarat Water Supply & Sewerage Board

Mecon Limited

Chhattisgarh State Power Distribution Company Limited

Tamil Nadu Transmission Corporation Limited

Engineers India Limited

Defence Research & Development Laboratory

NMDC Limited

PGCIL Approval Letter

NTCP Limited

Chennai Petroleum Corporation Limited

Bharat Heavy Electrical’s Limited

Electrical PWD Rajashtan

AAI Approval