Esseco USA is the North American arm of a long-standing manufacturer of sulfur-dioxide derivatives, including sodium metabisulfite, sodium sulfite and sodium thiosulfate. We are committed to supplying the highest-quality products, which are supported by a solid logistical base in North America and with in-depth customer and technical service.Esseco Group, was founded in 1920 as a sulfur dioxide producer in Trecate, Italy. Esseco has grown to become a major global manufacturer of sulfur dioxide and its derivatives, including a full spectrum of sulfites, bisulfites, metabisulfites and thiosulfates. Esseco exports much of its output to over 50 countries. It recently expanded its plant in Trecate, creating a 10,000-square-foot, state-of-the-art facility.