

Special Grade A Design Qualification for Environmental Engineering

Municipal Water Supply and Drainage Design Qualification Class B

Foreign general contracting qualification

Municipal Public Works General Contracting Level 2 Qualification

First-class qualification of environmental protection engineering professional contracting

Domestic Sewage Class B Operation Qualification

Class B qualification for industrial wastewater operation

Engineering Consulting Industry Grade B Credit Qualification

ISO9001 quality system certificate

ISO14001 Environmental Management System Certificate

GB-T28001 Health Management System Certificate

safety production license