1983
Opened Yon Art Gallery.
1984
Opened Nationalwide Gallery Chain Stores.
Designated as an official manufacturer for the 10th Seoul Asian Game's souvenirs.
1986
Designated as an official manufacturer for the 24th Seoul Olympic Game's souvenirs.
1988
Opened Field Sculpture Park at near Seoul.
1989
Established Offset Lithographic-Development-Research Institute.
1994
Developed Offset Lithography Technology for the first time in the world.
1998
Started mass products of Offset Lithographic Arts.
Offset Lithographic Arts were exhibited at Louvre Museum in France.
2000
Published the Korean edition of Louvre Museum Guide Book, La Visite.
2000.11
Applied for a patent of technology of Offsedt Lithography.
2001. 1
Established Yon Design & Offset Lithographic-Development-Research
Institute in Seoul.
