Technical innovation and green construction of steel structure 并列题名：Technical innovation and green construction of steel structure Theoretical innovation and practice on construction of the CPC Practical and innovative technologices for welding of steel structures 并列题名：Theoretical innovation and practice on construction of the CPC Technical innovation of quality and safety control in tunnel construction Study on self-innovation and the upgrading of industrial structure 并列题名：Practical and innovative technologices for welding of steel structures technological innovation and the effect of the employment on the eu countries / Design and application of steel structures