Long before whiteboards, beamers and laptops entered modern school classrooms, teachers relied on the humble, dusty, sometimes screechy blackboard chalk -- a material that has created a Jordanian business success story.
Chemical engineer Salah Aloqbi remembers sitting on a bus in Amman in 1995 when he hit on the idea that would lead him to create his company. More than two decades later it boasts 150 staff, with exports to more than 100 countries.
