Profile: Demark is a manufacturer of products related to grounding. We specialize in the grounding and installation of ground rods. We produce threadless couplers to splice groundrods in applications requiring more than 8' of depth. Our products include ground rod drivers, rod to wire connectors, groundlock, drive drills, drive points, drive bits with integrity chamber and truck grounders. We also deliver contract machining services to all manufacturing industries. We offer a combination of production machining, CNC matching, screw machining, multi-spindle drilling, through broaching and button broaching.