Nagarjuna Construction Co. Ltd. ICSA ( India ) Ltd. Chattisgarh State Electricity Board
         
         
 
KEC International Limited.   Universal Cables Ltd.   Assam State Electricity Board
         
         
   
Airtel   MSEDCL, Maharashtra   GESCOM, Gulbarga
         
         
   
APSPDCL, Andhra Pradesh   JSEB, Jharkhand   DHBVN, Haryana