Hind petro has been bleeding since months. In previous day session it closed at 171 which is its a good support. If you zoom out its chart on weekly time frame you will find this zone is very crucial for Hind petro (171-164). So, swing short should be avoided and anybody having postiion on short side they must book their profit. If a bounce came from here and breaks the 175 level buy can be initiated with SL 170.