Early in 1901, at a meeting in Hull House, Chicago, American architect Wright Wright read an article titled "the art of the machine." He proposes that the machine tool will become the architect's powerful extension, and the architect's role in architectural design will change.

Italy's 2015 milan world Expo was co-organized by the Milan city government, the lombardi government, the Milan exposition foundation and the Milan chamber of commerce and industry. "Feed the earth: the energy of life" is the theme of Milan's bid to host the 2015 world Expo. The seminar is also one of the activities of Italy to host the 2015 milan world Expo.

The provinces, autonomous regions housing construction department, safety supervision bureau, municipal construction committee, safety supervision bureau, the Beijing municipal planning commission, the Shanghai planning and administration of land and resources, housing and the housing authority, tianjin, chongqing municipal planning bureau, land resources and housing authority, the xinjiang production and construction corps construction bureau, safety supervision bureau, the relevant units: In order to further strengthen the glass curtain wall security protection work, to protect people's life and property safety, according to the law of the People's Republic of China, the production safety law of the People's Republic of China and the construction engineering quality management regulations and other laws and regulations, regarding the notify is as follows: