ITC on WIP & Stock in Hand as on 30-06-17

We are Registered under Haryana Haryana VAT as Composition Contractor.

We are not claiming any ITC.

We are paying Taxes(Vat/Excise) on purchases.

1) Some party charging Excise/VAT on their Invoice.

2) & Some Dealer subsumed the Excise Duty paid by them to Manufacturer in to their sales & Charged Sale Tax Only on the whole amount. Although he is not charging any Excise from us but ultimately we are also paying Excise.


My Question is Can we claim ITC on both the above cases?


If yes, then what is the Procedure?

Kindly brief in detail.


Thanks
Biswajit