Chengdu Alga attended the 7th National Workshop on Structural Anti-seismic & Control  held in Nanzhou, China  from July 28 to July 30, 2011, in which, the subject is structural  anti-seismic and control technology is used to decrease the frequent seismic damages. The well-known specialists and scholars have made the reports. The relevant books, periodicals, magazines, technologies and the products have been displayed.