Certificate ISO 9001:2000/ISO 9001:2008
HEC was granted the Certificate ISO 9001:2000 on 16/01/2004 by DET NORSKE VERITAS (DNV) of the Netherlands and on 30/11/2011, it was upgraded to Certificate ISO 9001:2008.

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Awards by Lao’s people democratic republic(30/12/2013)
Works awarded gold medal for quality(30/12/2013)
Awards of high quality projects(20/12/2013)
Awards(20/12/2013)
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Environmental impact assessment
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