Switzerland Imports from Bulgaria of Aldehydes, Cyclic Polymers of Aldehydes, Paraformaldehyde was US$130 during 2006, according to the United Nations COMTRADE database on international trade. Switzerland Imports from Bulgaria of Aldehydes, Cyclic Polymers of Aldehydes, Paraformaldehyde - data, historical chart and statistics - was last updated on May of 2024.