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Engineering classification | Overall project | General contracting enterprise factor | Environmental effect | Project factors |
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| : Construction coordination and overlapping | : Experience in similar projects in contracted enterprises | : Influence of construction on surrounding residents | : Complexity of project technology |
| : Application of new materials and technologies | : Construction safety capability of supporting system | : Influence of construction on surrounding buildings and underground equipment | : Project design depth and service requirements |
| : Environmental safety around the construction site | : Main equipment advantages of enterprises | : Narrow space | : Expected profit of project |
Key influencing factors | : Standardization of economic and technical indicators | : Design capability of contracting enterprises | : Building density and strength | : Project scale |
| — | : Construction technical ability | : Climatic and hydrological conditions of the project | : Project duration requirements |
| — | : Enterprise governance ability | — | : Construction site convenience conditions |
| — | : Financial ability of contracting enterprises | — | — |
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