There is list of products where no further tax charge as they fall under third schedule of Sales Tax Act 1990.
Fruit juices and vegetable juices
Aerated waters or beverages.
Syrups and squashes.
Perfumery and cosmetics
Toilet paper and tissue paper
Spices sold in retail packing bearing brand names and trade marks
Shoe polish and shoe cream
Cement sold in retail packing
Household electrical goods, including air conditioners, refrigerators, deep freezers, televisions, recorders and players, electric bulbs, tube-lights, electric fans, electric irons, washing machines and telephone sets.
Household gas appliances, including cooking range, ovens, geysers and gas heaters.
Foam or spring mattresses and other foam products for household use.
Paints, distempers, enamels, pigments, colors, varnishes, gums, resins, dyes, glazes, thinners, blacks, cellulose lacquers and polishes sold in retail packing
Lubricating oils, brake fluids, transmission fluid, and other vehicular fluids sold in retail packing.
Storage batteries excluding those sold to automotive manufacturers or assemblers
Tyres and tubes excluding those sold to automotive manufacturers or assemblers
Biscuits in retail packing with brand name
Auto-parts, in retail packing, excluding those sold to automotive manufacturers or assemblers