My company who is manufacturing Silent DG sets is registered in Faridabad under Haryana Sales Tax. We want to sell our DG sets to a customer whose Bill to address will be in Haryana i.e buyer is also registered in Haryana i.e in Gurgaon & material will be shipped to i.e consignee will be in some different state. Now customer wants us to do E-1 sale in which seller will give E-1 form & buyer will issue C form. Pls clarify whether this mode of transaction of E-1 sale is acceptable as per sales tax laws. Also seller is putting one clause on his invoice which s as Subsequent Sale under section 6 against E-1.