National top grade qualification in general contracting of housing construction
Engineering Design Integrated Qualification Class-A, also top grade
First class(second top grade) qualification of general contracting of municipal utilities
Second class(third top grade) qualification of general contracting of hydraulic and hydro-power engineering construction
Third class(fourth top grade) qualification of general contracting of railway engineering construction
First class qualification of special contracting of construction decoration engineering
First class qualification of special contracting of the installation engineering of mechanical-electrical equipment
First class qualification of special contracting of fire protection facilities engineering
First class qualification of special contracting of construction curtain wall engineering
First class qualification of special contracting of foundation and infrastructure engineering
Second class qualification of special contracting of steel frame engineering
Second class qualification of special contracting of bridge engineering
Second class qualification of special contracting of the installation engineering of lifting plant
Second class qualification of special contracting of channel project