ISA, founded in 1482, is a centuries-old family-owned enterprise with its headquarters in Dillenburg, Germany. It was the world's first to develop Manganin resistance alloy in 1889 and produced the world's first surface-mount milliohm shunt resistor in 1987. Currently, it is a world-leading manufacturer of precision micro-resistance resistors. Its business scope covers alloy production, forming technology, etching and assembly technology, as well as complex testing and packaging machines. It is renowned for its ISA-PLAN® and BVS series precision resistors, which are applied in fields such as new energy vehicles, industrial automation, and medical equipment.