Excise requirement in Import & export with duty payment

Sir,

  We are starting our assembly unit near pune in the next month prior this we have only our head office at coimbatore location. this unit is our first assembly unit in india. Now as intially we are going to start importing our inputs from our internal units abroad with duty payment. and after assmebing that product in india we are going to export back to our internal units only to abroad with duty payment. now as a basic registration requirement we have applied for the following things.

 1) IEC Registration. 2) SVB registration with custom at the time of live import 3) Excise Registration.

Now apart from above what else we require from the Customs & Excise Poit of view.as both will be in the loop at the time of Imports & exports with duty payment

regards

Dhiraj jadhav