Water Treatment Solution No.1

Environmental Specialists ‘The-Ofour’

The-Ofour Co., Ltd., founded in 2004, has contributed to the development of Korea’s green industry by developing core technologies and know-hows in the water treatment field with excellent company members.

The-Ofour Co., Ltd. has continuously grown with our customers by responding to the changing needs of environmental market through ceaseless technological innovation. As a result, The-Ofour was recognized for its competence in the environmental industry, and thus was selected as one of the Leading Environmental Companies designated by the Korean Ministry of Environment in August 2020.

The-Ofour Co., Ltd. promises to do our best not only for our customer’s future but also for achieving our responsibilities for sustainable world, and to achieve the corporate mission, ‘Clean & Sustainable‘. 


Securement of core technologies
Enhancement of technology power


Collaborative attitude to customers
Incessant self development


Sustainable development
Sustainable environment