Apco Industries: Provides sales, service and installation of exterior architectural products.Architectural Precast, Inc.: Providers of concrete precast site furnishings.Atlas Industrial Holdings: Full-service supplier for industrial machinery needs. List of services, clients and descriptions of past projects.Benchmark Architectural Systems Inc.: Manufactures foam core panels for the building industry. Includes features and specifications.Lang Stone Company: Suppliers of granite, limestone, and marble for use in landscaping and construction.McKee Door Sales: Distributor of commericial sectional overhead doors, rolling steel doors, security grilles, and counter shutters.Rosati Windows: Builds custom replacement vinyl windows and doors.Specialty Columbus Architectural Products: Provides sales, installation and service of windows, custom cabinetry and hardware. Includes list of products and services.The Door Company: Provides service, installation and design of commercial entrance systems.