由杭萧钢构公司用3000吨国产优质钢材建成的“杭州瑞丰国际商务大厦”近日正式竣工。该大楼是全国第一座自行设计、制作、安装的全部采用矩型钢管混凝土柱结构的钢结构高层建筑,它既抗震又耐火,属国家重点技术创新示范项目。它的出现,将对我国建筑业的发展起到积极推动作用。□ Hangzhou Hsiao Feng International Business Building, completed by Hangxiao Steel Structure Company with 3000 tons of domestically produced high-quality steel, has been officially completed recently. The building is the first high-rise steel structure in China to be designed, manufactured and installed by itself. It is both a seismic steel structure and a refractory structure. It is a national key technological innovation demonstration project. Its emergence will play an active role in promoting the development of China’s construction industry. □