Located in St. Louis, SEMCO’s 400,000 square-foot factory is an excellent production, warehousing and shipping location—from ... the heart of America. With Design, Development, Tooling, Production, Decoration, Pack-out, and Shipping all under one roof, SEMCO can tightly manage full retail compliance. SEMCO is agile, quick-to-market, and ready for any challenge. SEMCO has been molding great plastic parts for over six decades, and they are not reliant upon any one type of customer for their success. SEMCO is a top-tier resin purchaser, so they will always be offering the best price when legitimately compared with its competition. Molding very small to very large parts, SEMCO has over 55 presses to match a variety of resin-product needs. read more