• 1998
• 08Established Duhyun Industries. (Songnae-dong, Bucheon)

• 1999
• 03Produced anti-static bags.

• 09Developed the Ionizer.

• 2000
• 03Developed and manufactured D.C ionizer

• 07Changed the firm name into DOOSTEC.

• 2004
• 04Transferred the head office. (to Bucheon Techno Park in Bucheon)

• 2006
• 03Developed and produced the A.C Pulse Ionizer.

• 04Completed a clean room for producing anti-static bags.

• 06Newly established a three-way sealing machine for large anti-static bags and a three-way sealing machine for small and medium-sized bags.

• 2007
• 11Acquired the ISO 9001:2000 Quality Management System Certification.

• 2008
• 06Acquired the ISO 14001:2004 Environmental Management System Certification.

• 08 Newly established a two- and three-way anti-static sealing machine.

• 11Designated as an innovative SME. (Small and Medium Business Administration Gyeonggi Office)

• 2012
• 04Supplied MBB Bag packing paper to Samsung Electronics (Onyang).

• 2014
• 02Registered the trademark of DOOSTEC. (in China)

• 2017
• 03Established an R&D department. (for the Ionizer)

• 04 Received a venture company certification.