KARACHI: More than 400 representatives of national multi-national companies from all over Pakistan have swamped the metropolitan city of Pakistan, Karachi to attend the marketing Conference 2012. The conference has been kicked off. The conference was organized by a private company Marcon. The occasion is being attended by more than 400 representatives from all over Pakistan representing national and multi-national companies. Chairman Marcon Imran Ahmed termed such conferences as fruitful for the growth of marketing sector in Pakistan, hoping to continue to arrange such conferences in future.