Please tell me that my unit is 100% Export unit but now i am started local sale in few month. My unit is 100% export unit & sothat my all purchase or sale on Tax is refundable can u tell me after i sale my product in a local market can that vat or CST is refundable & also tell which books i shall maintain & also tell me my reg. Office in Mumbai my all export sale in enter in reg. office because its total export now im am sale in local market my product can i enter all sale entries in my factory in Aurangabad because my factory in Aurangabad , please tell all that in breaf,