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History

Research and development of environmental technology Rich field experience and
advanced technical manpower

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History

Precious environment Our hands

2010’s ~ Present

A new leap forward Continuous research and know-how accumulated over 30 years

2026

January Participated in Water Valley Business Week

2025

November Certificate of Commendation (Prime Minister)

September Certificate of Designation for a Water Quality Environment Management Service Agency

August Patent acquisition (Waste landfill leachate treatment system incorporating membrane aeration biofilm reaction structure and high efficiency oxygen structure)

July Patent acquisition (Sulphate wastewater treatment method and sulphate wastewater treatment system based)

June Patent acquisition (Valuable resources recovery system for industrial inorganic salt wastewater)

April Designated as a Water Star Company by the National Water Industry Cluster

March Recognized as an Exemplary Taxpayer by the Daegu Regional Tax Office

February Participated in Water Valley Business Week

2024

November Participated in Korea International Water Week 2024

October Patent Acquisition
(Developed a high-recovery efficiency water treatment method utilizing a multi-stage reverse osmosis system)
( Developed a water treatment system featuring a multi-stage reverse osmosis structure with extended lifespan and high recovery efficiency)

January Participated in Water Valley Business Week

2023

December Participated in Korea International Water Week 2023

November Acquired the ISO 45001 Safety and Health Management System Certification

November Patent acquisition (Deaerating system of wastewater mixed with high concentration ammonia nitrogen)

February Acquired a water technology performance certificate (PFR ozonation system)

January Expanded and relocated to the Gumi Office

2022

December Patent acquisition (Sewage and wastewater complex treatment system with improved advanced treatment structure)

November Selected as a 3030 company in Daegu Metropolitan City

October Closed an agreement as a Veolia distributor

September Commendation from the Minister of Health and Welfare

June Patent acquisition (High-concentration complex odor treatment system)

January Patent acquisition (ozone gas dissolution apparatus)

2021

November Registered as an integrated licensing agency

2020

December Registered as an environmental consulting business

December Commendation from the Gyeongsangbuk-do Governor

April Commendation from Daegu Metropolitan City Mayor

2019

December Technology Research Center, Moved into the, Korea Water Cluster

November Awarded as a 100 Local Star Company in Daegu Metropolitan City

August Acquired the Paju Factory

July Certified as an excellent technical capability company (T-3)

2018

October Conclude a non-exclusive license agreement for MEO process development technology transfer (Kyungpook National University)

2017

November Patent acquisition (dewatering and drying apparatus for sludge treatment)

October Gyeongsan Factory completed

August Patent acquisition
(Heavy Metal Wastewater Treatment System using Membrane Separation and Wastewater Treatment using the Same)
(Heavy Metal Wastewater Treatment System using Membrane Separation-Ion Exchange and Wastewater Treatment using the Same)

MayEstablished a subsidiary in Hanoi, Vietnam (CHEONGSU VINA)

2015

NovemberConclude a technology agreement with Sumitomo Metal Mining, Japan

NovemberPatent acquisition (VOCs Treatment System using Low-temperature Catalysts)

2014

DecemberCommendation from Daegu Regional Environmental Office Director

SeptemberOpened the Gumi Office / Pohang Office

JunePatent acquisition (High-Efficiency Sedimentation Tank with Feedback Suction Pipe)

JanuaryAcquired the Hidden Champion Certification

2013

MaySelected as a Daegu 100 New Technology Commercialization Project

JanuaryConclude a technical agreement with Nihon Filter, Japan (heavy metal wastewater treatment system)

2012

OctoberPatent acquisition (sedimentation and wastewater equalization treatment system)

MarchOpened the Paju Office

2011

MayAcquired the INNOBIZ certification (technology innovative SME)

MarchRegistered as a specialized construction business (mechanical equipment construction)

2010

NovemberEstablished an affiliated research center

Before 2009s

Stepping Forward CHEONGSU steps forward for a new leap forward

2009

JanuaryAcquired the ISO 9001 Quality Management System Certification

JanuaryAcquired the ISO 14001 Environmental Management System Certification

2008

DecemberCommendation from the Minister of Environment

MarchDeveloped a low temperature catalyst system (VOCs treatment)

2003

SeptemberRegistered as an environmental pollution prevention facility business (air)

JuneMoved to the current location

1998

OctoberChinese branch (QINGDAO CHEONGSU Limited, China)

1995

AprilRegistered as an environmental pollution prevention facility business (water quality)

1991

JulyCHEONGSU Co., Ltd. incorporated under a new name

1987

AprilCheongsu Chemicals established (environmental chemical business)

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