Assignment in Tunis November 2014. Portrait of Mohamed Mestiri president of Sotugraisse company, located outside Tunis, Tunisia, specializes in the production of grease and lubricants. The company produces a range of different greases and used to only use paraffinic oil in their grease production, but recently made the switch to using Nynas naphthenic oil in some of their products. http://www.nynas.com/Segment/Base-oils/Case-stories/A-wind-of-change/