国产成人精品无码片区在线观看,性色AV极品无码专区亚洲,亚洲娇小与黑人巨大交,日本欧美一区,亚洲熟妇丰满xxxxx

The International Association for Shell and Spatial Structure 2013 Symposium was held on September 23rd -27th in Wroclaw University of Technology in Poland, and "Beyond the limits of man" was the theme of the conference. Mr. MOTRO, chairman of the association chaired the meeting.

More than 200 people from all over the world attended the conference, including experts in the field of spatial structure, college professors and enterprise members. And Jinggong steel was the only one steel structure enterprise from China as the conference sponsor participated the meeting,who has built the National Stadium (bird's nest), Beijing, the Sun Valley Expo 2010, Shanghai and the King Abudulaziz International  Airport, Jeddah, KSA and so on.

JINGGONG STEEL INTERNATIONAL

Oct 25, 2013