Product Design & Development, Inc. (PDDI) is a full-service tool and die company based in York, Pennsylvania, established in 1976. PDDI specializes in providing comprehensive tooling solutions for the window and door manufacturing industry, including window design, hardware design, testing assistance, fabrication equipment, and metal stampings. They offer services such as plastic injection molded parts, machined parts, and design assistance for manufacturers beyond the architectural product sector. PDDI's capabilities include in-house design using AutoCAD and Solidworks, manufacturing precision parts, high-quality tools, and offering contract machining services. They also have an injection mold facility on-site for competitively priced molds and molded parts.