Tariff exemption for LPG imports by major oil companies enables duty-free supply to household and NDEC customers. Amendment substitutes entry 141 to classify liquefied propane and butane mixture, liquefied propane, liquefied butane and liquefied petroleum gases (LPG) under specified tariff headings when imported by Indian Oil Corporation Limited, Hindustan Petroleum Corporation Limited or Bharat Petroleum Corporation Limited for supply to household domestic consumers or to nondomestic exempted category (NDEC) customers, and records nil duty treatment for those imports during the period of effect.