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 31 Jan. 2012 



 

 

 

In December 2011, **VWS (Beijing) Co. , Ltd** and **OTV Engineering (Shenzhen) Co., Ltd** were awarded **ISO 9001:2008 certificate**. The Quality Management Systemfor **Design, ssuply, installation, commissioning and other related services of process plants for the treatment of potable water, waste water and sludge** has been audited by TÜV SÜD.