Vice President M. Venkaiah Naidu on Friday said the International Exhibition-cum-Convention Centre (IECC) project at Pragati Maidan here will further strengthen and diversify the country's trade and help promote it in different world markets.Naidu, who laid the foundation stone for the redevelopment of the ITPO-Pragati Maidan Complex into a world class IECC, emphasised the need for such convention and exhibition facilities in other cities as well.The foundation stone of the Integrated Transit Corridor Development (ITCD) along Pragati Maidan was also laid, which has been designed to decongest traffic in and around the area by making all road crossings signal-free.