07/1987

Chungsoo Chemical Ltd.

Environment medicine and operation management service

09/1991

Extend engineering business

Water treatment device and environment business

03/1992

Designated energy use rationalization construction business

Number(Daegu 7-200)

12/1994

Registered water supply and drainage specialty business

Registered number(Daegu 13-80)

03/1995

Co-developed electric beam water treatment technology

Russia science academy research center

10/1996

Established environment technology business¡¯ overseas office

China(Chingdao)

01/2000

Patented and trade mark registered of heavy metal fixing agent

HEMIMATE. CS-300S   

05/2000

Chungsoo water treatment industry

Changed trade mark

04/2005

Certified quality management system

ISO 9001:2000(KSR-Q-05336)

04/2005

Certified environment management system

ISO 14001:2004(KSR-E-05114)

05/2005

Completed office and factory of China branch

Plot(1000 pyeong) factory(400 pyeong)

06/2007

Incorporated Chungsoo waters Ltd.

Capital 150 million won