Profile: Denver Industrial Sales and Service Company Inc. manufactures and distributes a wide variety of quality material & parts. Our products include seal coatings & rejuvenators, patching materials, crack & joint sealants, geo composites, asphalt cutbacks and dampproofing products. Our PAVISEAL is designed for use on any asphalt pavement surface such as parking lots, airports, driveways, bike paths, school yards and walk ways. Our DISSCO 520 is a fibered asphalt base coating designed for use as a below grade dampproofing compound for residential and commercial applications.