Exise

We are a SSI manufacturing unit in west bengal .We have obtain this number which shown below 1) VAT Number -YES 2) CST Number-YES 3) ESI Numer- Yes 4) PF Number -YES 5) P.Tax Number - YES 5) Service Tax Number -NO ( Because Job Work below 10 Lakhs) 6) Excise Number - No ( Because Annual Turnover below 1.5 Crore) Please Note that when we have purchase raw meterial pay VAT & Excise Duty both . Now question is we adjust only VAT Payment & not EXCISE DUTY , Can We adjust EXCISE DUTY without Excise & Service Tax Number please clarify