- 1956. Established
- 1962. Made a large capacity enamel storage tank
- 1994. Developed U-Jin Powder for PTFE coating
- 1997. Obtained a patent for the coating of PTFE with U-Jin powder
- 1999. Facility made for PTFE coating

- 2001. Opened Seoul office for overseas marketing
- 2001. ISO 9001 Certified
- 2003. New factory equipped with up-to-date electrostatic powder coating system
and furnace starts operation
- 2004. Export to Electrolux, Haier, Fisher&Paykel
- 2004. Awarded the Exemplary Tax Payer Prize from “National Tax Service”
- 2006. Established Qingdao U-Jin
- 2006. Established Qingdao U-Jin
- 2007. Appointed as Inno-Biz company by “Small and Medium Business Administration”
- 2007. Obtained a patent in China
- 2007. Awarded the prize for the USD 500,000 – exporter
- 2008. Became a supplier for GE and Electrolux
- 2008. Awarded the prize for the USD 1 million – exporter

- 2010. Expanded the overseas market to Germany, Italy, Poland, Thailand etc
- 2012. Supplied the world’s first enameled HRSG
- 2013. Awarded the price for the USD 3 million – exporter
- 2015. Awarded the Exemplary Tax Payer Prize from “National Tax Service”