Qatar Chamber General Manager Rumaih al-Ruhani cuts a ribbon to mark the inauguration of the US Trade Exhibition- Qatar 2012 at Doha Exhibition Centre yesterday as US Ambassador to Qatar Susan L Ziadeh and others look on. The four-day expo, which had the participation of a large number of US companies and their country’s distributors will conclude on Saturday. US made vehicles, furniture, engineering and other equipment are on display. PICTURE: Thajuddin