Kolkata Metro’s Blue Line becomes India’s first to get battery backup
Kolkata: Kolkata Metro's Blue Line has become the country's first metro corridor to get battery backup that will carry the ...
Kolkata: Kolkata Metro's Blue Line has become the country's first metro corridor to get battery backup that will carry the ...
National Payments Corporation of India (NPCI) has revealed that electricity bill payments service for more than 70 electricity boards is ...