Suggestions ????

Hi, plz give me advice, i have business of purchase some wood and furniture in delhi and i send those material to raigarh(chatisgarh).And i procesed this material for final product and i sold in raigarh to one company which have registration in vat(raigarh) but i dont have any vat registration.The company already mention in contract that we would not paid liable to pay any tax to you.so give me advice sir bcs me and my frnd are confused in these case plzzzzz give me advice what can i do to settle the vat,,,,bcs there are 50 lakh turnover and how to settle the vat which already paid by me....   thanks