(2021-2-20) construction Version (new year recruitment of wanyang group in 2021)

How to use shield machine? Finally saw the whole process of tunnel construction, rare video..

Notice of Qingdao construction safety supervision station on printing and distributing the assessment scheme for safety director system of

Construction technology of super high pumping concrete

Pay attention to detour! The toll station in Ordos will be completely closed for construction soon!

The most comprehensive technical disclosure for the construction of synthetic polymer coiled material roof waterproof layer

Standard for construction of socket type coiled steel pipe scaffold

The latest data ｜ there are 9834 enterprises with first-class construction general contracting qualification