CST Storage is the world's largest provider of modular, factory coated bolted storage tanks for dry bulk and liquid applications in municipal, industrial and agricultural markets.

The company was created in November 2010 with the merger of premier tank manufacturers Engineered Storage Products Company (ESPC), producer of glass-fused-to-steel tanks sold under the brand names Aquastore, Harvestore and Slurrystore and Columbian TecTank (CTT), producer of epoxy-coated and other modular bolted steel tanks and factory-welded silos used in a variety of industries since 1893. Weaver Reclaimer Systems which designs custom industrial reclaimers was added to the family in 2011.

The company has fabrication facilities located in Parsons, Kansas; Winchester, Tennessee; and DeKalb, Illinois. Its engineering centers of excellence are located in Lenexa, Kansas; Parsons, Kansas; DeKalb, Illinois; and Winchester, Tennessee. CST Storage maintains in headquarters in Lenexa, Kansas