"The transport cost of one kg of incense stick from Vietnam to Chennai or Bangalore is just one Paisa while it is 10 paisa from Tripura. So, we requested the Central government not to decrease the import duty because the artisans in Tripura would face hardship for survival. Now, Tripura produces about 55-60 per cent of incense sticks in the country and the rest come from foreign countries," he added.