Class II general contracting of construction worksMunicipal Public Works Construction General Contracting Level IIWater conservancy and hydropower project construction general contracting level IIGrade II general contracting of highway engineering constructionElectrical and mechanical engineering construction general contracting IIGrade II General Contracting for Power Engineering ConstructionGrade II general contracting of mine engineering constructionGrade II general contracting of petrochemical engineering construction
Class II general contracting of construction worksMunicipal Public Works Construction General Contracting Level IIWater conservancy and hydropower project construction general contracting level IIGrade II general contracting of highway engineering constructionElectrical and mechanical engineering construction general contracting IIGrade II General Contracting for Power Engineering ConstructionFormwork scaffolding professional contract regardless of gradeBuilding decoration engineering professional contracting secondary
Class II general contracting of construction worksMunicipal Public Works Construction General Contracting Level IIWater conservancy and hydropower project construction general contracting level IIGrade II general contracting of highway engineering constructionTransportation enterprise safety production standardization level 1Building decoration engineering professional contracting secondaryBuilding curtain wall engineering professional contracting secondarySteel structure engineering professional contracting secondary
Municipal public works construction general contracting level 3Professional contracting of foundation engineeringConstruction of geological disaster control engineering, Class AGeological disaster control engineering design, Class ARisk Assessment of Geological Disaster Control Engineering, Class ABuilding decoration engineering professional contracting secondaryBuilding curtain wall engineering professional contracting secondaryProfessional contracting for waterproof, anticorrosion and thermal insulation engineering
Engineering Design Construction Industry (Construction) Class AEngineering Design, Municipal Industry, Road Engineering, Grade AEngineering Design, Municipal Industry, Bridge Engineering, Grade AEngineering Design, Landscape Architecture, Special Class AClass I General Contracting of Construction EngineeringBuilding decoration and decoration engineering professional contracting levelProfessional contracting of waterproof, anticorrosion and thermal insulation engineeringProfessional contracting of foundation engineering
Installation, repair and renovation of special pressure-bearing equipment. Installation of public pipelines GB2Engineering Supervision, Municipal Public Works, Class AClass I General Contracting of Construction EngineeringEngineering Supervision, Housing Construction Engineering, Grade AMunicipal public works construction general contracting level IGrade II general contracting of highway engineering constructionProfessional contracting of highway subgrade worksProfessional contracting of highway pavement works Class II
Water conservancy safety production standardization secondaryEnvironmental and Ecological Protection Engineering Class BAgricultural wastewater grade BTransportation enterprise safety production standardization level 1Special engineering (special equipment lifting and hoisting) professional contracting regardless of gradeSpecial engineering (special lightning protection) professional contracting regardless of gradeSpecial engineering (building rectification and translation) professional contracting regardless of gradeSpecial engineering (structural reinforcement) professional contracting regardless of grade
Geographic Information System Engineering Supervision Class BGeological disaster control engineering design, Class AReal Estate Surveying and Mapping Supervision Grade BGeological disaster control engineering survey, Class APhotogrammetry and Remote Sensing Supervision Class BRisk Assessment of Geological Disaster Control Engineering, Class AExhaust gas grade BExhaust gas grade B
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