home > about us - Corporate History

 
 
 
- Feb.  -  Foundation of Hyein Engineering Co., Ltd.
- Feb.  -  Agency Agreement with Aqua-Aerobic Systems, Inc. of America
- Apr.  -  Agency Agreement with Biwater International Ltd. of Britain
- Jun.  -  Agency Agreement with ADI Systems, Inc. of Canada
- Jun.  -  Participation in ENVEX 2000 (International Environmental Exhibition)
- Dec. -  Agency Agreement with PX Tech S.A. of Switzerland
 

 
- Jan.  -  Agency Agreement with Permo of France
- Apr.  -  Agency Agreement with OHM Electric Co., Ltd. of Japan
- Jun.  -  Participation in ENVEX 2001 (International Environmental Exhibition)

 
- Dec. - Consultant registration in Africa Development Bank

 
 

 
- Apr.  -  Appointed & Registered as a company with new and outstanding technology
                  by Ministry of Small and Medium Business Administration
- May.  -  Company name changed Hyein Engineering Co., Ltd. To GRENEX Limited.
- Jun.  -  Participation in ENVEX 2002 (International Environmental Exhibition)

 
 

 
- Feb.  -  License Agreement for Automatic Backwash Filter of Aqua-Aerobic
                  Systems, Inc.
- Mar.  -  Registered as a turnkey contractor for wastewater treatment facility to
                  Ministry of Environment
- Jun.  -  Participation in ENVEX 2003(International Environmental Exhibition)

 
- Dec.  -  ISO9001:2000 Authorized

 
 

 
- Apr.  -  Renewal of company registration for new and outstanding technology to
                  Ministry of Small and Medium Business Administration
- Jun.  -  Participation in WEMT 2004 & ENVEX 2004