av大全亚洲一区二区三区_高清国产亚洲欧洲av综合一区_A级毛片大全免费版特黄色_中文字幕一本到无线

聯(lián)系我們 | Contact Us
當(dāng)前位置: 網(wǎng)站首頁 >> BUSINESS >> Highway Engineering
Highway Engineering

Highway Engineering Service Introduction

To possess third grade qualification of general contract for highway engineering, and can undertake the construction for highways with single contract value below 5 times of enterprise registered capital, and for bridge projects with the length of single bridge below 200 meters or single span below 40 meters.