• HISTORY
  • 2021

    Developed recloser

  • 2020

    Developed eco-friendly gas insulated switchgear (E-GIS)

  • 2019

    01 Entered the Philippine market (concluded a contract with a local agent)

  • 2018

    06 Small and Medium Business Cooperation R&D Project Agreement

  • 2017

    09 Eco Gas Insulated Switch-gear (E-GIS) development approved

  • 2016

    06 Developed Eco Load Break Switch/ Technology agreement with Indonesia

    02 Developed Polymer Housed Lightening Arrester with Lead wire

  • 2012

    12 Developed Epoxy Load Break Switch (eco-friendly product)

  • 2011

    01 New construction and relocation of workplace

  • 2010

    05 Developed SF6 Gas Automatic Sectionalizer Switch

    03 Developed C.O.S

  • 2009

    11 Registered as a technology innovation company

    10 Acquired ISO-9001,ISO-14001 certification

    08 Developed time switch

  • 2008

    10 Developed pad mounted gas load break switch

    05 Registered as a corporate innovation company

  • 2005

    09 Developed pole mounted gas load break switch

    06 Established Industry-University Research Center / Cheongsong Technology Research Center

  • 2004

    09 Selected as a robust SME

    09 Founded OILSTONE Co., Ltd.

  • 2002

    04 DONG YANG EEC Co., Ltd. Incorporation Transition

  • 1998

    06 DONG YANG EEC Establishment