Nov.1991
The prize from the Administrator of Patent Administration for its excellent performance.

Apr.1992
Silver prize at the '92 World Invention contest in Geneva

Oct.1992
Gold prize at the '92 World Invention contest in Nurnberg, Germany

May.1992
Grand prize at the '93 World Invention contest in pittsburgh, USA

May.1993
The presidential citation at the Korea Invention day

May.1994
The citation from Ministry of Commerce and Industry at the 29th Invention day.

May.1994
Grand prize at the '94 World Invention contest in pittsburgh, USA

July.1994
SD(successful design) mark

Sep.1994
Silver prize at the Int'l new technology Exhibition in L.A, USA

Oct.1994
Gold prize at the New Products Exhibition in Germany