C134 I'm Your Aunt

"This speed is still too slow?" But he did not dare to go head to head with Zheng Shuang for anything.

"Why aren't you slow? The blueprints were planned a few days ago, the lines were also measured, and the materials were all prepared. Besides, this is also a steel frame structure, after the foundation is completed, the rest of the machines will be filled in with reinforced concrete