1970
- 04.15
- Established Yeonhap Ampoule Industrial Co.
1974
- 11.13
- Relocation of plant (Sungsu-dong, Seoul)
1977
- 08.03
- Renamed as Yeonhap Glass Co., Ltd.
1979
- 04.10
- Appointed as a Superior Enterprise by the Jeil Bank
1982
- 12.14
- Export Ampoule to Japan
1983
- 06.15
- Appointed as a Superior Enterprise by the Industrial Bank of Korea
1984
- 07.01
- Relocation of Suwon plants (Wau-ri, Suwon-si, Gyeonggi-do)
1986
- 10.30
- Equipped water cleansing system for glass tube based on GMP standard
- 05.12
- Export Vials to India
1987
- 06.01
- Acquisition of Universal, the vacuum flask company
1988
- 08.13
- Received a confirmation for quality management from the Korea agency for Technology and Standard
- 05.09
- Acquire Q mark (Korea testing & research institute)
1990
- 02.10
- Appointed as a Superior Enterprise by the Industrial Bank of Korea
1991
- 05.01
- Equipped Production facility for STAINLESS vacuum bottle
1992
- 02.20
- Export Stainless Vacuum bottle & Food Jar to Canada
- 01.14
- Export Stainless Vacuum bottle to Japan
1993
- 11.30
- The Trade day Award from the Commerce, Industry and Energy Minister
1997
- 05.30
- Completion of air ventilation system
- 03.03
- The Tax day Award from National tax service commissioner
2000
- 02.24
- Expansion of warehouse for the glass raw materials
2001
- 03.07
- Export Ampoule, Vial to Malaysia
2002
- 11.17
- Registration approval by the State Drug Administration of China
- 08.31
- Acquire ISO9001
- 03.21
- Export Ampoule, Vial to China
2007
- 06.09
- Relocation of Anseong Plant