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Environmental protection engineering contractor
Level 1

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Engineering design and environmental engineering project (air pollution prevention and control engineering) Grade A

Engineering design and environmental engineering project (water pollution prevention and control engineering) Grade A

Solid waste treatment and disposal facility operation service (domestic waste incineration facility) Level 1

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Engineering design of Light steel structure engineeringGrade B

Engineering design and environmental engineering project (solid waste treatment and disposal engineering)Grade B

Steel structure engineering contractor Level 3

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