The two-step three span and three-step three span in scaffolding refer to the step distance between the upper and lower horizontal bars.
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List of Fujian construction engineering general contracting enterprises with special qualification approved by the National Bureau of
A community in Jilin city was closed for construction! The residents make complaints about their homes, which are too inhumane.
Jinzhai Road will be closed! //Jinzhai financial support for agriculture signed a total amount of 328 million yuan!
