Switzerland Imports from Tunisia of Silk Yarn and Yarn Spun from Silk Waste; Silk Worm Gut was US$2 during 2016, according to the United Nations COMTRADE database on international trade. Switzerland Imports from Tunisia of Silk Yarn and Yarn Spun from Silk Waste; Silk Worm Gut - data, historical chart and statistics - was last updated on June of 2024.