Zhejiang Dadi Steel Structures Co., Ltd., is a subsidiary of Longyuan Construction Group (Stock Code: 600491) and the well-known steel structure manufacturing base founded in 1994, in the easily accessible city of Hangzhou. The company has also been awarded as a designated production enterprise by the China Metal Structures Association and as the only steel structural enterprise designated by the National Steel Structures Mobilization Center. The company has already been entitled to the international ISO Quality, Environment and Occupational Health Management System certification, AISC certification from the American Institute of Steel Structures, CE certification from the European Union, GOST certification from Russia and Physical and Chemical Nondestructive Testing Capability certification.

The company has been entitled to receive the First Grade of General Contracting for Construction Engineering, the First Grade of Professional Contracting of Steel Structure Engineering, the First Grade of Professional Contracting of Curtain Wall Engineering, the Second Grade of Professional Contracting of Decoration Engineering, and the First Grade of Special Design of Light Steel Structure Engineering, the Special Grade of Steel Structure Manufacturing, the Special Grade of Metal Roof Design & Construction and various other professional qualifications. The company has undertaken the constructions of more than 3,000 projects, such as various large-scale exhibition centers, airport terminals, stadiums, high-rise steel structures, bridge steel structures, industrial heavy steel workshops, etc. at home and abroad, and more than 100 projects have been awarded the China Architecture Luban Prize, Jeme Tien Yow Civil Engineering Prize, National Quality Engineering Prize, China Steel Structure Gold Prize, Feitian Prize, Shanghai Golden Steel Prize, Qianjiang Cup, Magnolia Cup, Golden Steel Prize, etc.

Since its founding, the company has been dedicated to research and innovation in the area of green prefabricated steel structures, expanding into the modern construction market and leading the development of general contracting and prefabricated steel structures with steel as the backbone.

The company sees high standards, fresh starts and strong forces as opportunities, market demand as guides, technological innovation as drivers, quality as its first responsibility and integrity and performance as its criteria.  In order to provide best-in-class management, products and services for the development of the steel construction business, friends from all walks of life have sincerely cooperated and worked together.