2025

10  Filed a patent for a shock-absorbing fastening structure for railway base plates

06  Certified as a core manufacturing company

2024

12  Acquired ISO 14001 (Environmental Management System) certification

2022

07  Received risk assessment accreditation as an excellent workplace

2019

01  Filed a patent for a spring manufacturing device with adjustable inner coil diameter

2018

09  Established local plant "Dong Yang Vina" in Haiphong, Vietnam
       (spring manufacturing)

06  Certified as a specialized materials and components company
         (Ministry of Trade, Industry and Energy)

2017

09  Renewed certification as an innovative technology SME (INNO-BIZ)

2013

12  Acquired Single PPM certification (Single PPM Quality Innovation Headquarters)

2008

05  Acquired Hyundai Motor SQ certification (welding sector)

2007

07  Acquired ISO/TS16949:2009 certification - SWISS AG

02  Selected as a Promising SME by Daegu Bank

2002

12  Obtained Tier 1 Quality certification as a supplier from Pyeong Hwa Co., Ltd.

07  Joint R&D on reliability for vehicle door latches - Korea Institute of Machinery & Materials

02  Selected as a Promising SME by Daegu Bank

2001

12  Received Excellent Supplier Award in Quality from Pyeong Hwa Co., Ltd.

02  Acquired QS-9000 / ISO 9002 certification – USA EAGLE

2000

02  Received Excellent Supplier Award for cost reduction from Pyeong Hwa Co., Ltd.

1999

11  Implemented a 100-Day Factory Innovation Campaign - KMAC

1998

04  Implemented 100 PPM Quality Innovation Program - QM Consulting

​1993​

10  Relocated and expanded to the Seongseo Industrial Complex

1986

06  Changed company name to Dong Yang Industrial

1980

06  Established Dong Yang Spring (spring manufacturing)