About Us
2022-06-17
◆Awarded the title of “Municipal-Level Enterprise Technology Center” by Hangzhou City
2022-06-17
◆Obtained the AISC U.S. Structural Steel Construction Quality Management System Certification
2022-06-17
◆ Obtained the “Registration Certificate for Customs Declaration by Consignors and Consignees of Import and Export Goods of the People’s Republic of China” and the “Grade-A Qualification Certificate for Chinese Steel Structure Manufacturing Enterprises.” <br/> ◆The company name has been changed to: Zhejiang Dadi Steel Structure Co., Ltd.
2022-06-17
◆ Obtained the “People’s Republic of China Certificate of Qualification for Foreign Contracting Projects” ◆ 100% controlled by Longyuan Construction
2022-06-17
◆Certification under the three international standards—Quality Management (GB/T 19001), Environmental Management (GB/T 24001), and Occupational Health and Safety Management (GB/T 28001)—has been successfully audited by Zhejiang Gongxin Certification Co., Ltd., resulting in the issuance of a unified integrated certification.
2022-06-17
◆ Awarded the “Designated Enterprise for Fabrication and Installation of Architectural Steel Structures” by the China Construction Metal Structure Association under the Ministry of Construction ◆ Awarded the “National-Level Key High-Tech Enterprise Certificate” under the National Torch Program <br/> ◆ Longyuan Construction holds a 51% stake
2022-06-17
◆ Awarded the title of “National Steel Structure Mobilization Center” by the National Economic Mobilization Center
2011
◆Awarded the title of “Municipal-Level Enterprise Technology Center” by Hangzhou City
2025-12-16
2009
◆Obtained the AISC U.S. Structural Steel Construction Quality Management System Certification
2025-12-16
2008
◆ Obtained the “Registration Certificate for Customs Declaration by Consignors and Consignees of Import and Export Goods of the People’s Republic of China” and the “Grade-A Qualification Certificate for Chinese Steel Structure Manufacturing Enterprises.” <br/> ◆The company name has been changed to: Zhejiang Dadi Steel Structure Co., Ltd.
2025-12-16
2010
◆ Obtained the “People’s Republic of China Certificate of Qualification for Foreign Contracting Projects” ◆ 100% controlled by Longyuan Construction
2025-12-16
2007
◆ Awarded the “Zhejiang Province High-Tech Enterprise Certification”
2025-12-16
2001
◆Certification under the three international standards—Quality Management (GB/T 19001), Environmental Management (GB/T 24001), and Occupational Health and Safety Management (GB/T 28001)—has been successfully audited by Zhejiang Gongxin Certification Co., Ltd., resulting in the issuance of a unified integrated certification.
2025-12-16
2006
◆ Awarded the “Designated Enterprise for Fabrication and Installation of Architectural Steel Structures” by the China Construction Metal Structure Association under the Ministry of Construction ◆ Awarded the “National-Level Key High-Tech Enterprise Certificate” under the National Torch Program <br/> ◆ Longyuan Construction holds a 51% stake
2025-12-16
2005
◆ Awarded the title of “National Steel Structure Mobilization Center” by the National Economic Mobilization Center
2025-12-16
1994
◆ Hangzhou Dadi Space Frame Manufacturing Co., Ltd. Established
2025-12-16
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Zhejiang Dadi Steel Structure Co., Ltd.
Address: 17th Floor, Building B, No. 618 Boxue Road, Xiaoshan Science and Technology Innovation Center, Hangzhou, Zhejiang Province
Email:dadi@cnzjdd.com
Copyright © 2026 Zhejiang Dadi Steel Structure Co., Ltd.
