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   Through independent innovation, the four key technologies and 30 sub core technologies, which are the core technology and the large volume prestressed concrete structure, are accumulated and formed. The construction technology of long and large volume prestressed concrete structures, the construction technology of large span and complex steel structures, the crack prevention technology of concrete structures, the foundation treatment and deep foundation pit engineering in Linhai. These key technologies have been successfully applied in the 2008 Qingdao International Sailing Center, the Qingdao Grand Theatre, the international terminal and the International Convention and Exhibition Center, and have achieved remarkable economic and social benefits.

Comprehensive construction technology of ultra long and large volume prestressed concrete structures

Construction technology of large span and complex steel structure

Anti cracking and anti seepage technology of concrete structures

Foundation treatment and deep foundation pit engineering technology under complex geological conditions in Linhai