LEENO INDUSTRIAL, Inc. engages in the manufacture and sale of spring contact probe and integrated circuit test socket. It operates through the Leeno Pin and IC Test Socket, and Medical Device business divisions. The Leeno Pin and IC Test Socket business division focuses on the production and testing of electrical and electronic components, and semiconductor chips. The Medical Device business division refers to the production of ultrasonic diagnostic device parts. The company was founded in November 1978 and is headquartered in Busan, South Korea.