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Second level qualification
Steel structure qualification
A kind of hoisting equipment for large steel box girder bridge across the river--invention patent certificate
A staggered installation device for steel structure
Photovoltaic panel mounting assembly
A photovoltaic bracket
A connection structure of a concrete main structure colored steel plate wall
A connecting member of roof color steel plate and secondary structure
An assembly component for installing concrete main beam and steel secondary beam of an assembled building
Utility Model Patent Certificate