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    • :: Company History ::
    • 2016
    • DecemberEstablished "Employee stock ownership association of Daejin Environmental Industries Co., Ltd" and stocks were donated by major shareholders.
    • OctoberParticipated in Greentech Exhibition "IGEM 2016" in Malaysia.
    • SeptemberParticipated in "Enviro-Tech Philippines 2016" in the Environmental Technology Fair in the Philippines.
    • SeptemberParticipated in "2016 International Climate & Environment Fair" hosted by Jeollanam-do, Gwangju Metropolitan City (Kim Daejung Convention Center).
    • JuneSelected as "a company for promoting business for small and medium business" by Korea Environmental Industry and Technology Institute under the Ministry of Environment.
    • 2015
    • AugustThe validity period for certificates of new technology by Ministry of Environment nos. 374 and 161 (Electrolytic dephosphorization type internal circulation MBR advanced water treatment technology (DS-MBR) combined with supernatant discharging device) is extended (until August 2022).
    • 2014
    • NovemberSigned unit price contract for a third party with the Public Procurement Service for the first time in the area of "sewage treatment facility".
    • JuneRegistration of patent No. 1412689 (System for treating non-point sources capable of washing residual areas and discharging stagnant water).
    • JuneDesignation of the best product of "Sewage Treatment Facility" by Public Procurement Service (No. 2014063).
    • MarchAcquisition of a certificate of performance for DS-MBR sewage treatment apparatus by Small and Medium Business Administration (No. 14-228).
    • JanuaryRegistration of business of private sewage treatment facility management (No. 2014-15).
    • 2013
    • SeptemberCertification of new technology by Ministry of Environment no. 161 (Electrolytic dephosphorization type internal circulation MBR advanced water treatment technology (DS-MBR) combined with supernatant discharging device).
    • SeptemberRegistration of patent No. 1306980 (Water treatment apparatus and method using iron electrolysis and the method).
    • AugustRegistration of patent No. 1303264 (Underwater stirrer for water treatment).
    • 2012
    • AugustCertification of new technology by Ministry of Environment no. 374 (Electrolytic dephosphorization type MBR advanced water treatment apparatus combined with supernatant discharging device).
    • AprilCertification of proving direct production of sewage treatment apparatus and components (Machinery Industry Association).
    • AprilCertification for proving unmanned remote system and direct production of automatic control panels (Automatic Control Association).
    • FebruaryRegistration of patent No. 1122745 (Electrolytic dephosphorization type MBR advanced water treatment apparatus combined with intermittent reaction, energy saving internal circulation and supernatant discharging device).
    • 2011
    • AugustRegistration of patent No. 1030075 (Electro coagulation type apparatus for processing wastewater and a method for processing using the same).
    • JuneRegistration of international patent - Philippines.
    • 2010
    • DecemberRegistration of patent No. 1004083 (Nonpoint pollution processing apparatus including whirlpool first and second processing units and a third microorganism decompose processing unit).
    • SeptemberRegistration of patent No. 0980636 (Apparatus for removing nitrate nitrogen using electrolysis, which is used for water purification and sewage treatment facilities).
    • JuneRegistration of patent No. 0964403 (Ultraviolet ray sterilization apparatus for water treatment).
    • AprilRegistration of patent No. 0955538 (Internal circulation and supernatant discharging device).
    • MarchRegistration of Patent No. 0948197 (Advanced treating apparatus for removing nitrogen and phosphorus using intermitted aeration, membrane, electrolysis apparatus, and advanced method of water treatment using the same).
    • MarchAwarded a citation of NTS Gwangju District Office - Exemplary taxpayer.
    • 2006
    • OctoberEnvironmental New Technology Certificate No. 183, Environmental New Technology Verification No. 95 (Advanced Treatment Technology for the phosphorus in sewage by adding ferrous plate electrolytic products in anoxic aeration process).
    • 1997
    • FebruaryRename of company : Daejin Chemical Co., Ltd ⇒ Daejin Environmental Industry Co., Ltd.
    • FebruaryRegistration as a company for design and construction business of sewage, manure, livestock wastewater purification system.
    • 1995
    • JulyConversion into a corporation (Daejin Chemical Co., Ltd.).
    • 1989
    • JanuaryEstablishment of Daejin Chemical (FRP water tank manufacturing).