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Founded in 1902, Guarantee Electrical Company is a full-service electrical contractor that provides service in the areas of electrical construction, design and build, communications and data, value engineering, procurement and service and maintenance. The company also operates several subsidiaries, including Denver-based Guarantee Electrical Contracting and St. Louis-based Tel-VI Communications. It maintains its headquarters in St. Louis.

ProSource of St. Louis is a home improvement store for contractors, builders, installers, designers, and their homeowner clients looking to complete a flooring, kitchen, or bath remodeling project. Housing everything needed in one location, ProSource offers the best products and materials, including carpet, hardwood, cabinets, countertops, and much more. We'll help you stay within your home improvement budget with low wholesale pricing, while our digital project management tools provide you with 24/7 support. Plus, you'll have a dedicated account manager to provide personalized service from start to finish. Browse our extensive product catalog, explore inspiring project ideas, and locate your local showroom on our website today.

Waterjet Tech specializes in CNC robotic waterjet, abrasive jet, and laser marking services. With state-of-the art water jet and laser cutting equipment, our shop is able to cut with precision through the hardest of materials leaving smooth, accurate edges.