CSP Inc. is a custom extruder of Polyolefin materials in St. Louis Missouri. Established in 1954 as a distributor of hot stamping foils CSP has grown into a major supplier to the Horticultural, Printing, and School Supply industries, as well ... Continue reading A wholly owned division of CSP serving the advertising specialty business ; products such as shelf talkers, advertising plates, index tabs, signage, and many other products can be found on the screen printing plus section of this website.