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Domestic professional companies

No. Company Name Category
1 Beijing Design Branch Survey, Design and Consulting
2 South West Design Branch
3 North China Design Branch
4 Xinjiang Petroleum Engineering Co., Ltd.
5 Qinghai Design Branch
6 EastChina Environmental & Geotechnical Branch
7 Beijing Consulting Branch
8 China Petroleum First Construction Corporation Construction
9 China Petroleum Seventh Construction Corporation
10 Luoyang Fabrication and Modularization Base Fabrication and Modularization Bases
11 Qingdao Fabrication and Modularization Base
12 Dwell Company
13 Xinjiang Fabrication and Modularization Base