Roy Lengweiler    bridgelab

                                  
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                 Sheikh Zayed Bridge, Abu Dhabi
Binh Bridge, Haiphong Vietnam                  Rama VIII Bridge, Bangkok Thailand
                 Wadi Leban, Saudi Arabia
Batam Tonton Bridge, Indonesia                 
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Roy Lengweiler, dipl. Ing. ETH/SIA - Fluh 74, CH-3204 Rosshäusern - +41 31 751 00 70 t - +97 15 0624 5150 m