Management of high-tech business
E-Mail : jinhwan@hyoungwon-eng.co.kr
Management of fire-fighting equipment
E-Mail : khkil@hyoungwon-eng.co.kr
Financial management of headquarters
E-Mail : anjih@hyoungwon-eng.co.kr
Purchase management of headquarters
E-Mail : jkopzcv@hyoungwon-eng.co.kr