日韩av片无码一区二区不卡电影,2021久久伊人精品中文字幕有,婷婷爱爱激情福利在线视频,国产精品一区不卡,亚洲人成色7777在线观看

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