Sierra Assembly Technology LLC is a leading PCB manufacturer in USA providing various services related to printed circuit board assembly. Sierra Assembly Technology Inc. is an innovative company that excels in providing outstanding results every single time. Services: • PCB Manufacturing • Quick turn PCB • PCB Prototyping • Circuit Board Design • Component Sourcing • Quality Management and Assurance • Maintenance and Repair All products at Sierra can be customized. They are flexible in terms of design and choice of components.