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About
Celebrating 30 years as of June 2021, SUM Ltd is a family owned and operated multi-national corporation based in Calgary, Canada. We specialize in the production of thermal insulation for very high or low temperature industrial applications. We produce removable insulation blankets, fire and welding blankets, instrument covers, and more. Our motto is measure twice, cut once—and it shows. Our custom removable insulation blankets are created meticulously and fit to precision.