The Supertech Group also defaulted on payments to banks and financial institutions, and currently around Rs 1,500 crore of such loans have become non-performing assets (NPA), the agency said. Supertech Ltd, which was formed in 1988, has so far delivered around 80,000 apartments, mainly in Delhi-NCR. The company is currently developing around 25 projects across the National Capital Region (NCR). It is yet to give possession to more than 20,000 customers.