Established in 1915, Diamond Manufacturing Company perforates metal, plastic and other materials. It provides original equipment manufacturers, job shops and architectural firms with a wide range of perforated material. The company perforates more than 2,000 patterns and offers it in various forms, such as sheet, coil, tube, fabricated and finished products. Diamond Manufacturing Company offers a wide range of services, including blanket contracts, just-in-time deliveries, value-added services, ship-to-stock programs and guaranteed pricing. It also provides various value-added services, such as blanking, rolling, fabricating, welding, finishing, anodizing, painting, polishing, powder coating, assembly, bar coding, and custom labeling and packaging. In addition, the company manufactures pierced metal products, including PLASTICORE, a single-sided piercing, and GASKETCORE, a double-sided piercing. Headquartered in Wyoming, Pa., Diamond Manufacturing Company has manufacturing facilities in Michigan City, Ind., a fabrication facility in Dallas, Pa., with a stocking location in Charlotte, N.C.