The huge demand for building materials and the concept of sustainable development have brought great opportunities and challenges to the cement and concrete industry. Rod & nbsp; Senior Vice President, Turner Construction In his recent speech at the Northwest Concrete Alliance Congress in Seattle, Mr. Wille pointed out that the concrete industry should develop in the direction of greening, and that concrete workers throughout the United States are paying more and more attention to wall insulation concrete technology. Mr. Wille's Turner Construction Company is not only the largest general contractor in the United States, but also the oldest concrete construction contractor. As a result, Wille is highly regarded in the American concrete community. His latest green building ideas will be applied to the design of Wal-Mart's headquarters building in McKinney, Texas.