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Qualification category and grade:

Grade-A specialist contractor for ground foundation engineering projects

Grade-B general contractor for petrochemical engineering projects

Grade-A general contractor for highway engineering projects

Grade-A general contractor for metallurgical engineering projects

Grade-A specialist contractor for electronic and intelligent engineering projects

Grade-B specialist contractor for highway pavement engineering projects

Grade-A specialist contractor for building decoration engineering projects

Grade-A specialist contractor for fire-fighting equipment projects

Grade-B specialist contractor for highway subgrade engineering projects