CHENNAI, July 22: The Directorate of Revenue Intelligence is focussing more on trade-related frauds such as under-valuation and mis-declaration of export items, what with a decline in smuggling. The DRI Director-General, A K Pande stated that a fake document for export of diamonds worth Rs 300 crore was recently detected and that this document contained all the relevant seals (forged) from various departments including the Customs.