A-Top Proto is a Hong Kong based company established in 2007. We provide professional Mechanical design services, Manufacturability services, Rapid Prototyping, Tools development & fabrication and support the entire supply chain manufacturing.Our services include: CNC Machining/Turning, Plastic Injection Molding, Sheet Metal Stamping, Die Casting and Plastic/Metal tools in-house development.Our team consists of experienced program managers, product development engineers, tooling engineers & quality engineers to fulfill all your needs. From scratch through NPI stage, all the way to mass production for all mechanical enclosure level, A-Top is the industry?s trusted service provider.