轨道交通工程建设项目的勘察、设计、施工、监理，应当通过招标投标，由具备相应资质等级的单位承担。
The prospecting, design, construction work and supervision of the construction project of CRC engineering shall be undertaken by the unit with appropriate qualification grade through public bidding.
分析了目前数据中心工程招投标实践中在招投标界面、资质要求、需求差异等方面存在的问题，并提出改进建议。
This paper analyzes the problems on bidding interface, qualification requirement and demand difference of data center engineering bidding, and puts forward some improvement Suggestions.
投标人须提供各种（合格有效的）资质证书的复印件：如营业执照、经营许可证等；
Bidder should provide the printed version of various valid qualification certificates, such as business license and operation license, etc (The copy must be signed or sealed by the bidder).
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