The 47th International Fair of Algiers (FIA) is to be held from May 28 to June 2 with the participation of 36 countries, including the United States, the event's guest of honour, organizers said Monday. The major economic event will be attended by eight Arab countries, eight European nations, three from North and South America, five from Asia and two from Africa. A total of 51 firms are taking part in the fair on an individual basis. The will come from Spain, Italy, India, Mali, Iran, Burkina Faso, South Africa, Yemen, Belgium and Ukraine. More than 400 national companies, working mainly in chemical and petrochemical industry, agricultural equipment and services, are taking part in the event.  The United States, the event's guest of honour, will be represented by 75 companies.