Angel broking is the oldest brokerage firm in india. its was started in 1987.
It is provide best customer support fascility.You can also check wikipedia about angel broking firm.In India 75 brokerage firm avaliable in the market. But Angel broking have about 13 lakh plus customer and all custome is happy with openning demat and trading account with angel broking.
Now a days its provide open demat and trading account with in 2 hours and u can go trade for shares.
but brokerge charge quite high as well as others brokerage firm