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186 Points
Joined May 2008
The answer to your situation is not simple.
If you take registration in Maharastra then which address in Maharshtra you will give in application?
Further place of supply in case of import of goods in location of importer.
Location of importer is not defined, if we take definition at par with loaction of service receiver then it will be place of your registration that is West Bengal State.
ideally as you are registered in West Bengal you can get goods after customs clearance with IGST in Bill of Entry, You can make sale to Buyer in Maharshtra and raise invoice with IGST.
You may seek help from some consultant also.