Circuit Assembly CA-HLE-SR is a type of electronic assembly process used to build custom Printed Circuit Board (PCB) assemblies such as LEDs, light bulbs, switches, relays and other components. This process uses high layer enhancement and surface-mount technologies (HLE-SR) to create highly reliable and intricate circuits in a very short period of time. The HLE-SR process takes upwards of three days to assemble a typical printed circuit board. The process starts with cleaning the printed circuit boards, then the components are inserted, soldered, tested, actioned and finally the assembly is completed using a robotic system. The small components are soldered onto the board using a combination of high layer enhancement and surface-mount technologies. This process allows for higher accuracy and a better finished product, which is a result of the smaller features on the board. With the use of automation and precision, the HLE-SR process allows for a greater degree of complexity in the printed circuit boards produced.