Uttrakhand VAT Act, Form 3 B/Form 11 - Rules & Procedures - VAT CST

We have a plant at Haridwar and from haridwar we are procuring most of our raw materials packing materials. We want to know the procedure to get the same at concessional rates (From 4.5% to 2 %) against Form 3B/ Form 11. Presently, we have 95% as stock transfer and 5% as sale in Uttrakhand. 1. The eligibility procedure to get the raw materials packing material at concessional rates ? 2. Is there any specific limit/restiriction for using Form 3B/Form 11, in relation to Stock Transfer Vs Sales in Uttrakhand, pls advice ?