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Periods 1978 -1900 | Periods 1991 -2000 | Periods 2001 -Now  
   
2001 •  Goshu Kyowa (Thailand) Co., Ltd, changes name and becomes
   GK Protecno Co., Ltd.
   
2002 •  Goshu Technoservice Co., Ltd. is established.
   
2003 •  Launch of the product skids for water and wastewater treatment that are
   Deionization Skid, Ultra Deionization Skid, Filter Unit, Chemical Feeding Unit,    
   Mixed-Bed Unit, NaOCl Active Equipment Unit, Submerge Membrane
   Unit : Sheet  Type.
•  Increase of paid up capital to 40,000,000 baht
   
2004 •  Goshu Kohsan has been awarded for turn-key project in Vietnam
•  Goshu Kohsan established its representative office in Hanoi
•  Increase of paid up capital to 45,000,000 baht
•  Our Chiangmai Branch Office is moved to Northern Region Industrial Estate,    
    Lumphun province.
•  Goshu Kohsan (Vietnam) Co., Ltd. is established in Vietnam Singapore Industrial Park,
    Vietnam in December.
   
2005 •  Increase of paid up capital to 50,000,000 baht
•  Goshu Kohsan (Vietnam) Co., Ltd. is established
    as the Head Office in Hanoi, Vietnam in August
•  We are granted ISO 14001:2004 certificate in October
   
2006 •  Goshu Kohsan has been awarded for turn-key project of wastewater
    treatment plant of automobile industry in Thailand
   
2007 •  Goshu Kohsan has been awarded for turn-key project of water,
    wastewater, and wastewater recycle of electronic industry
    in Vietnam.
•  Our Hanoi Office is moved to Thanh Long Industrial Estate
    to expand our business.