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Design Qualification:

Engineering certificate for environmental project grade 1 and municipal drainage project grade 2¡¢project consulting certificate grade 2

Construction Qualification:

Contracting certificate of environmental protection project grade 1

General contracting certificate of municipal construction grade 2

General contracting certificate of mechanical & electrical engineering grade 1

Contracting certificate of mechanical & electrical equipment installation for construction grade 2

General contracting certificate of water conservancy and hydropower project grade 2

Operational Services Certification:

Urban centralized sewage treatment facilities operation service level I

Industrial wastewater treatment facilities operation service level I