동아특수건설
ABOUT

Tech & History

Quality, safety and environmental management systems, national certifications, and continuously registered new technologies prove our reliability.

01 — CREDENTIALS

State-certified technology and management systems.

02 — HISTORY

The road we have walked.

Founded in 1986 as Donga Fence Development, renamed Donga Special Construction in 1998 — forty years of technology registration and national certification.

1986Founded as Donga Fence
2021-Present
2025.01
Group-standard certification for rockfall-protection fences and nets (Cert. No. 25-004)
2024.10
European patent registered (Germany, Switzerland, Austria) (HYBRID ANCHOR, EP3907331)
2024.06
Head office relocated (#1608 STX V-Tower, 128 Gasan Digital 1-ro, Geumcheon-gu, Seoul)
2024.01
R&D department upgraded to a corporate research institute
2023.09
U.S. patent registered (HYBRID PERMANENT ANCHOR, US 11,739,491 B2)
2023.04
Designated New Construction Technology No. 962
2023.03
Japanese patent registered (Hybrid Permanent Anchor, No. 7244724)
2010-2020
2020.06
Registered on the Korea Expressway Corp. technology market (anchors, retaining walls, protective fences)
2020.04
Developed the compression-composite permanent anchor
2018.12
Developed and mass-produced the 2,360MPa high-strength permanent anchor
2017.12
Received the New Knowledge Management Award
2017.01
Localized and mass-produced rockfall and debris-flow protection systems
2011.12
Capital increased by KRW 866 million (to KRW 1,476 million)
2005-2009
2006.12
IP rights for a U-turn head load-bearing body for sidewall-collapse-prevention anchors (Patent No. 10-0663126)
Established the Hwaseong factory (161-41 Deogu-ri, Bongdam-eup, Hwaseong-si, Gyeonggi-do)
2006.11
IP rights for a rockfall-fence connecting fixture (Patent No. 10-0645350)
IP rights for a drainage manhole box with embedded moisture material (Utility Model No. 20-0431520)
2006.10
Certified R&D-dedicated department (No. 20065786)
IP rights for a multi-stage grouting rock anchor (Patent No. 2005-0105635)
Certified as a venture company (No. 20060100298)
2006.09
IP rights for a wire-rope fixture for rock-collapse prevention (Patent No. 2005-0060239)
2006.08
Certified as a technology-innovation SME (INNO-BIZ)
2006.05
Filed an overseas application for a tie-cable binding device (Japan, App. No. 2006-156460)
2005.01
IP rights for a rock-bolt (nail) linked fixing device for rock-collapse prevention (Patent No. 0466491)
IP rights for a rock-bolt (nail) linked reinforcement device for rock-collapse prevention (Patent No. 0466493)
2000-2004
2004.10
Head office relocated to 837-52 Siheung-dong, Geumcheon-gu, Seoul
Branch registered at #814 Daeryung Technotown 3, 448 Gasan-dong, Geumcheon-gu, Seoul
2004.02
IP rights for a rock-bolt linked reinforcement device for rock-collapse prevention (Patent No. 0419146)
IP rights for a drainage manhole box (Utility Model No. 0342681)
2003.11
IP rights for a rock-bolt and rock-anchor installation device and method (Patent No. 0406813)
2003.10
IP rights for a rock-bolt installation device and method (Patent No. 0402890)
2003.03
IP rights for a mortar-leakage preventer for rock bolts (Patent No. 0346663)
2002.07
IP rights for a guardrail connector (Patent No. 0347088)
2001.12
Office relocated to Daeryung Technotown 3, 448 Gasan-dong, Geumcheon-gu, Seoul
2001.06
IP rights for an eco-friendly drainage channel (Utility Model No. 0236284)
2000.09
IP rights for a drainage-channel assembly (Utility Model No. 0204932)
2000.08
Returned construction license (painting business)
2000.03
IP rights for an anti-oxidation cover for rock anchors (Utility Model No. 0184183)
IP rights for a rock-bolt linked reinforcement device and method for rock-collapse prevention (Patent No. 0261973)
1986-1999
1999.08
IP rights for a slope-reinforcement frame (Utility Model No. 015977)
1998.12
Obtained ISO 9001 / KS A 9001 for design, construction and added services of civil structures
Obtained construction license (boring & grouting works)
1998.10
IP rights for a slope construction method (Patent No. 180072)
IP rights for a drainage construction method (Patent No. 170041)
1998.05
Obtained construction license (earthworks)
1998.02
Renamed to Donga Special Construction Co., Ltd.
Filed a patent for a method of installing PVC mesh on slopes
1997.11
Obtained construction license (painting works)
1996.10
IP rights related to rockfall-protection nets (Utility Model No. 100204 and 17 others)
1993.08
IP rights related to rockfall-protection fences (Utility Model No. 074043)
1992.08
Obtained construction license (metalwork)
1986.05
Founded Donga Fence Development Co., Ltd.