OSE Product Development :: Professional Mechanical Design and Manufacturing Service San Diego Product Design, Manufacturing Service, Product Design San Diego, Engineering San Diego With 30+ years of experience, OSE Product Development transforms ideas into manufactured products, on time and on budget. We offer product design (mechanical, industrial, CAD, PCB), prototyping (sheet metal, 3D printing, CNC) and manufacturing (US & a team in China which eliminates brokers’ fees).