State bank of India is the biggest branch in India. State bank of India is the multinational sector, public sector banking financial service comapny. it founded in 1 july 1955 and 2 june 1956 it is nationalization. its headquater in Mumbai in Maharastra. it has 18354 branches in India. Arubdhti Bhattachayra is the chair person of this bank. SBI provided the range of banking products through its network of branches in India. SBI has 7 retail branches in singapore. It is very good bank.