GST exemption for CSD and unit canteen supplies: goods supplied to unit canteens and authorized customers exempt. Exemption from State tax is granted for supplies of goods where specified tariff entries apply: supplies by the CSD to Unit Run Canteens and to authorized customers, and supplies by Unit Run Canteens to authorized customers. Interpretation of tariff terms follows the First Schedule to the Customs Tariff Act, 1975, including its Notes and explanatory rules, for identification of covered goods.