| No. | Certificate No. | Certificate Title | Validity | License-issuing Authority | The Class and Level of Qualification |
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| 1 | D151006293 | Qualification Certificate of Construction Enterprise | December 15, 2020 | Ministry of Housing & Urban-Rural Development of the People’s Republic of China | Supreme-Grade General Contractor for Construction of Road Works; First-Grade General Contractor for Construction of architectural Works First-Grade General Contractor for Construction of Municipal Public Works; First-Grade Specialist Contractor for Bridge Works; First-Grade Specialist Contractor for Tunnel Works; First-Grade Specialist Contractor for Road Pavement Works; First-Grade Specialist Contractor for Subgrade Works: First-Grade Specialist Contractor for Traffic Engineering (Traffic Safety Facilities of Road).
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| 2 | D251424692 | Qualification Certificate of Construction Enterprise | November 25, 2020 | Department of Housing & Urban-Rural Development of Sichuan Province | Third-Grade General Contractor for Construction of Railway ； Second-Grade Specialist Contractor for Installation of Lifting Equipment ；Second-Grade Specialist Contractor for Installation of Construction Electromechanical； Second-Grade Specialist Contractor for Road Transportation Engineering Road Electromechanical Engineering.
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| 3 | D351528454 | Qualification Certificate of Construction Enterprise | May 6, 2021 | Chengdu Urban and Rural Construction Committee | Pre-mixed concrete specialist contractor of no level. |
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