Developed by cooperative project with KERI, Bukyung Univ., and Kyungnam Univ. under government support of Industrial infra-technology project (development of high speed welding machine (150cm/min) for thin sheet of less than 1.2mm thickness.

Developed PULSE MIG welding machine, which is a high speed welding machine for thin aluminum sheet, under government support (KEMCO) of energy saving technology project. Developed high speed pulse MIG welding algorithm for thin aluminum sheet by applying PULSE-Shift type high frequency full bridge method