Capital goods Export

Hello Dear

We are one of  central excise register holder and we have purchase of capital goods,  and also cenvat credit availed,that capital goods used in our factory for export goods production purpose only, now we can raise the invoice of capital goods to other country buyer  for the purpose of amount received ,

- you have to export the goods physically within 180 days of receipt of such payment otherwise u would invite the violation of FEMA.

capital goods laying in our factory and we can use that capital goods export qty production only,  after complition of export order then capital goods send to other country or distory in domestic wth payment of aprapriate duty , 

Now our finished goods can be export under Rule 18, what procedure will fallowed please guide me

its very urgents