Kalyani Srivastava, 16-year-old from Jhansi, recently built an air conditioner for just Rs 1,800. She is studying in 12th standard at Lokamanya Tilak...
Kalyani Srivastava, 16-year-old from Jhansi, recently built an air conditioner for just Rs 1,800. She is studying in 12th standard at Lokamanya Tilak...