On Oct. 29 to 30, the Awarding Ceremony of 2012’ Scientific and Technological  Prizes sponsored by China Association of Construction Enterprise Management  (CACEM) was held in Beijing. At the ceremony, Using Constraint-based Assembly Welding  Process to Control Flatness of Single Deck Floating-roof forLarge-scale Storage  Tank applied by SNEI was awarded the first prize of Scientific and  Technological Innovation Achievement, and SNEI was awarded the title “Advanced  Enterprise of Scientific and Technological Innovation”.