Renamed to Suviol

Vision declaration ceremony held

Corporate R&D center upgraded and registered as a national research institute

Change in major shareholder (Glenwood)

Registered as an environmental consulting business.

Selected as an excellent workplace for “Discrimination-Free Workplace” by the Korea Labor Foundation.

Renamed to Techcross Environmental Services Co., Ltd.

Designated as an outstanding environmental company by the Ministry of Environment.

Entered the Vietnamese market. / Opened Seoul office.

Established a joint venture with Balhae Gyeonggong Group in Tianjin.

Achieved ISO 14001 certification.

Established Guangzhou branch in China.

Achieved ISO 9001 and ISO 14001 certifications for the China subsidiary.

Achieved OHSAS 18001 certifications for the China subsidiary.

Obtained general contractor license for construction and mechanical and electrical works in China.

Registered civil engineering construction business license.

Achieved OHSAS 18001 certification.

Obtained environmental engineering contractor license in China.

Established China subsidiary.

Registered public sewerage O&M business (treatment facilities).

Registered public sewerage O&M business (sewer pipelines).

Obtained environmental facility operation license in China.

Became a subsidiary of LG Electronics.

Renamed to HienTech Co., Ltd.

Renamed to Daewoo Entech Co., Ltd.

Established engineering business division.

Registered industrial environmental facilities construction license.

Renamed to Kumho Environmental Technology Co., Ltd.

Participated in next-generation core environmental technology development project (ECO-STAR Project).

Registered wastewater treatment facility management business license.

Achieved ISO 9001 quality management system certification.

Registered design & construction license for excreta  treatment facilities.

Registered electrical construction business license.

Registered water & sewer facilities construction license.

Registered water pollution prevention facilities business license.

Established Malgeunmul Jikimi Co., Ltd.