Czech Republic Imports from Brazil of Silk Yarn and Yarn Spun from Silk Waste; Silk Worm Gut was US$966 during 2011, according to the United Nations COMTRADE database on international trade. Czech Republic Imports from Brazil of Silk Yarn and Yarn Spun from Silk Waste; Silk Worm Gut - data, historical chart and statistics - was last updated on June of 2024.