Mailing address format in India : Is this correct?

I’d like to have an exact format of business mailing address in India (comma, abbreviations….) I wanna know if this is correct or not :

PNB Building, 4th Floor
5 Wallace Street, Fort
400 001 Mumbai
India

…or do I have to use Bldg. for building and 4/F instear of 4th Floor?